CINXE.COM

ISSN |  

<!DOCTYPE html> <!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]--> <!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]--> <!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]--> <!--[if gt IE 8]><!--> <html lang="en-US" class="no-js"> <!--<![endif]--> <head> <script type="text/javascript"> /* <![CDATA[ */ var gform;gform||(document.addEventListener("gform_main_scripts_loaded",function(){gform.scriptsLoaded=!0}),window.addEventListener("DOMContentLoaded",function(){gform.domLoaded=!0}),gform={domLoaded:!1,scriptsLoaded:!1,initializeOnLoaded:function(o){gform.domLoaded&&gform.scriptsLoaded?o():!gform.domLoaded&&gform.scriptsLoaded?window.addEventListener("DOMContentLoaded",o):document.addEventListener("gform_main_scripts_loaded",o)},hooks:{action:{},filter:{}},addAction:function(o,n,r,t){gform.addHook("action",o,n,r,t)},addFilter:function(o,n,r,t){gform.addHook("filter",o,n,r,t)},doAction:function(o){gform.doHook("action",o,arguments)},applyFilters:function(o){return gform.doHook("filter",o,arguments)},removeAction:function(o,n){gform.removeHook("action",o,n)},removeFilter:function(o,n,r){gform.removeHook("filter",o,n,r)},addHook:function(o,n,r,t,i){null==gform.hooks[o][n]&&(gform.hooks[o][n]=[]);var e=gform.hooks[o][n];null==i&&(i=n+"_"+e.length),gform.hooks[o][n].push({tag:i,callable:r,priority:t=null==t?10:t})},doHook:function(n,o,r){var t;if(r=Array.prototype.slice.call(r,1),null!=gform.hooks[n][o]&&((o=gform.hooks[n][o]).sort(function(o,n){return o.priority-n.priority}),o.forEach(function(o){"function"!=typeof(t=o.callable)&&(t=window[t]),"action"==n?t.apply(null,r):r[0]=t.apply(null,r)})),"filter"==n)return r[0]},removeHook:function(o,n,t,i){var r;null!=gform.hooks[o][n]&&(r=(r=gform.hooks[o][n]).filter(function(o,n,r){return!!(null!=i&&i!=o.tag||null!=t&&t!=o.priority)}),gform.hooks[o][n]=r)}}); /* ]]> */ </script> <!-- Google Tag Manager --> <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-KRFPCKG');</script> <!-- End Google Tag Manager --> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" /> <title>ISSN |  </title> <meta name="description" content=" "> <meta name="viewport" content="width=device-width"> <!-- Place favicon.ico and apple-touch-icon.png in the root directory --> <link rel="stylesheet" href="https://www.issn.org/wp-content/themes/themeissn/style.css"> <!--[if lt IE 9]> <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> <!--[if IE]><link rel="stylesheet" type="text/css" href="https://www.issn.org/wp-content/themes/themeissn/css/ie.css" media="screen" /><![endif]--> <!--[if IE 7]><link rel="stylesheet" type="text/css" href="https://www.issn.org/wp-content/themes/themeissn/css/ie7.css" media="screen" /><![endif]--> <link href="https://www.issn.org/wp-content/themes/themeissn/css/print.css" rel="stylesheet" type="text/css" media="print"> <script src="https://code.jquery.com/jquery-1.8.3.js"></script> <!--pour la popup--> <meta name='robots' content='max-image-preview:large' /> <link rel="alternate" hreflang="fr-fr" href="https://www.issn.org/fr/" /> <link rel="alternate" hreflang="en-us" href="https://www.issn.org/" /> <link rel="alternate" hreflang="es-es" href="https://www.issn.org/es/" /> <link rel="alternate" hreflang="zh-cn" href="https://www.issn.org/zh-hans/" /> <link rel="alternate" hreflang="ar" href="https://www.issn.org/ar/" /> <link rel="alternate" hreflang="ru-ru" href="https://www.issn.org/ru/" /> <link rel="alternate" hreflang="x-default" href="https://www.issn.org/" /> <script type="text/javascript"> /* <![CDATA[ */ window._wpemojiSettings = {"baseUrl":"https:\/\/s.w.org\/images\/core\/emoji\/15.0.3\/72x72\/","ext":".png","svgUrl":"https:\/\/s.w.org\/images\/core\/emoji\/15.0.3\/svg\/","svgExt":".svg","source":{"concatemoji":"https:\/\/www.issn.org\/wp-includes\/js\/wp-emoji-release.min.js?ver=6a3ad3465064a3df3b5c42a82345fce8"}}; /*! This file is auto-generated */ !function(i,n){var o,s,e;function c(e){try{var t={supportTests:e,timestamp:(new Date).valueOf()};sessionStorage.setItem(o,JSON.stringify(t))}catch(e){}}function p(e,t,n){e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(t,0,0);var t=new Uint32Array(e.getImageData(0,0,e.canvas.width,e.canvas.height).data),r=(e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(n,0,0),new Uint32Array(e.getImageData(0,0,e.canvas.width,e.canvas.height).data));return t.every(function(e,t){return e===r[t]})}function u(e,t,n){switch(t){case"flag":return n(e,"\ud83c\udff3\ufe0f\u200d\u26a7\ufe0f","\ud83c\udff3\ufe0f\u200b\u26a7\ufe0f")?!1:!n(e,"\ud83c\uddfa\ud83c\uddf3","\ud83c\uddfa\u200b\ud83c\uddf3")&&!n(e,"\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc65\udb40\udc6e\udb40\udc67\udb40\udc7f","\ud83c\udff4\u200b\udb40\udc67\u200b\udb40\udc62\u200b\udb40\udc65\u200b\udb40\udc6e\u200b\udb40\udc67\u200b\udb40\udc7f");case"emoji":return!n(e,"\ud83d\udc26\u200d\u2b1b","\ud83d\udc26\u200b\u2b1b")}return!1}function f(e,t,n){var r="undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope?new OffscreenCanvas(300,150):i.createElement("canvas"),a=r.getContext("2d",{willReadFrequently:!0}),o=(a.textBaseline="top",a.font="600 32px Arial",{});return e.forEach(function(e){o[e]=t(a,e,n)}),o}function t(e){var t=i.createElement("script");t.src=e,t.defer=!0,i.head.appendChild(t)}"undefined"!=typeof Promise&&(o="wpEmojiSettingsSupports",s=["flag","emoji"],n.supports={everything:!0,everythingExceptFlag:!0},e=new Promise(function(e){i.addEventListener("DOMContentLoaded",e,{once:!0})}),new Promise(function(t){var n=function(){try{var e=JSON.parse(sessionStorage.getItem(o));if("object"==typeof e&&"number"==typeof e.timestamp&&(new Date).valueOf()<e.timestamp+604800&&"object"==typeof e.supportTests)return e.supportTests}catch(e){}return null}();if(!n){if("undefined"!=typeof Worker&&"undefined"!=typeof OffscreenCanvas&&"undefined"!=typeof URL&&URL.createObjectURL&&"undefined"!=typeof Blob)try{var e="postMessage("+f.toString()+"("+[JSON.stringify(s),u.toString(),p.toString()].join(",")+"));",r=new Blob([e],{type:"text/javascript"}),a=new Worker(URL.createObjectURL(r),{name:"wpTestEmojiSupports"});return void(a.onmessage=function(e){c(n=e.data),a.terminate(),t(n)})}catch(e){}c(n=f(s,u,p))}t(n)}).then(function(e){for(var t in e)n.supports[t]=e[t],n.supports.everything=n.supports.everything&&n.supports[t],"flag"!==t&&(n.supports.everythingExceptFlag=n.supports.everythingExceptFlag&&n.supports[t]);n.supports.everythingExceptFlag=n.supports.everythingExceptFlag&&!n.supports.flag,n.DOMReady=!1,n.readyCallback=function(){n.DOMReady=!0}}).then(function(){return e}).then(function(){var e;n.supports.everything||(n.readyCallback(),(e=n.source||{}).concatemoji?t(e.concatemoji):e.wpemoji&&e.twemoji&&(t(e.twemoji),t(e.wpemoji)))}))}((window,document),window._wpemojiSettings); /* ]]> */ </script> <link rel='stylesheet' id='awqsf-custom-style-css' href='https://www.issn.org/wp-content/plugins/advance-wp-query-search-filter/css/awqsf-style.css?ver=all' type='text/css' media='all' /> <style id='wp-emoji-styles-inline-css' type='text/css'> img.wp-smiley, img.emoji { display: inline !important; border: none !important; box-shadow: none !important; height: 1em !important; width: 1em !important; margin: 0 0.07em !important; vertical-align: -0.1em !important; background: none !important; padding: 0 !important; } </style> <link rel='stylesheet' id='wp-block-library-css' href='https://www.issn.org/wp-includes/css/dist/block-library/style.min.css?ver=6a3ad3465064a3df3b5c42a82345fce8' type='text/css' media='all' /> <style id='classic-theme-styles-inline-css' type='text/css'> /*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} </style> <style id='global-styles-inline-css' type='text/css'> :root{--wp--preset--aspect-ratio--square: 1;--wp--preset--aspect-ratio--4-3: 4/3;--wp--preset--aspect-ratio--3-4: 3/4;--wp--preset--aspect-ratio--3-2: 3/2;--wp--preset--aspect-ratio--2-3: 2/3;--wp--preset--aspect-ratio--16-9: 16/9;--wp--preset--aspect-ratio--9-16: 9/16;--wp--preset--color--black: #000000;--wp--preset--color--cyan-bluish-gray: #abb8c3;--wp--preset--color--white: #ffffff;--wp--preset--color--pale-pink: #f78da7;--wp--preset--color--vivid-red: #cf2e2e;--wp--preset--color--luminous-vivid-orange: #ff6900;--wp--preset--color--luminous-vivid-amber: #fcb900;--wp--preset--color--light-green-cyan: #7bdcb5;--wp--preset--color--vivid-green-cyan: #00d084;--wp--preset--color--pale-cyan-blue: #8ed1fc;--wp--preset--color--vivid-cyan-blue: #0693e3;--wp--preset--color--vivid-purple: #9b51e0;--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple: linear-gradient(135deg,rgba(6,147,227,1) 0%,rgb(155,81,224) 100%);--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan: linear-gradient(135deg,rgb(122,220,180) 0%,rgb(0,208,130) 100%);--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange: linear-gradient(135deg,rgba(252,185,0,1) 0%,rgba(255,105,0,1) 100%);--wp--preset--gradient--luminous-vivid-orange-to-vivid-red: linear-gradient(135deg,rgba(255,105,0,1) 0%,rgb(207,46,46) 100%);--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray: linear-gradient(135deg,rgb(238,238,238) 0%,rgb(169,184,195) 100%);--wp--preset--gradient--cool-to-warm-spectrum: linear-gradient(135deg,rgb(74,234,220) 0%,rgb(151,120,209) 20%,rgb(207,42,186) 40%,rgb(238,44,130) 60%,rgb(251,105,98) 80%,rgb(254,248,76) 100%);--wp--preset--gradient--blush-light-purple: linear-gradient(135deg,rgb(255,206,236) 0%,rgb(152,150,240) 100%);--wp--preset--gradient--blush-bordeaux: linear-gradient(135deg,rgb(254,205,165) 0%,rgb(254,45,45) 50%,rgb(107,0,62) 100%);--wp--preset--gradient--luminous-dusk: linear-gradient(135deg,rgb(255,203,112) 0%,rgb(199,81,192) 50%,rgb(65,88,208) 100%);--wp--preset--gradient--pale-ocean: linear-gradient(135deg,rgb(255,245,203) 0%,rgb(182,227,212) 50%,rgb(51,167,181) 100%);--wp--preset--gradient--electric-grass: linear-gradient(135deg,rgb(202,248,128) 0%,rgb(113,206,126) 100%);--wp--preset--gradient--midnight: linear-gradient(135deg,rgb(2,3,129) 0%,rgb(40,116,252) 100%);--wp--preset--font-size--small: 13px;--wp--preset--font-size--medium: 20px;--wp--preset--font-size--large: 36px;--wp--preset--font-size--x-large: 42px;--wp--preset--spacing--20: 0.44rem;--wp--preset--spacing--30: 0.67rem;--wp--preset--spacing--40: 1rem;--wp--preset--spacing--50: 1.5rem;--wp--preset--spacing--60: 2.25rem;--wp--preset--spacing--70: 3.38rem;--wp--preset--spacing--80: 5.06rem;--wp--preset--shadow--natural: 6px 6px 9px rgba(0, 0, 0, 0.2);--wp--preset--shadow--deep: 12px 12px 50px rgba(0, 0, 0, 0.4);--wp--preset--shadow--sharp: 6px 6px 0px rgba(0, 0, 0, 0.2);--wp--preset--shadow--outlined: 6px 6px 0px -3px rgba(255, 255, 255, 1), 6px 6px rgba(0, 0, 0, 1);--wp--preset--shadow--crisp: 6px 6px 0px rgba(0, 0, 0, 1);}:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}:where(.wp-block-columns.is-layout-flex){gap: 2em;}:where(.wp-block-columns.is-layout-grid){gap: 2em;}:where(.wp-block-post-template.is-layout-flex){gap: 1.25em;}:where(.wp-block-post-template.is-layout-grid){gap: 1.25em;}.has-black-color{color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-color{color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-color{color: var(--wp--preset--color--white) !important;}.has-pale-pink-color{color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-color{color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-color{color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-color{color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-color{color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-color{color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-color{color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-color{color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-color{color: var(--wp--preset--color--vivid-purple) !important;}.has-black-background-color{background-color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-background-color{background-color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-background-color{background-color: var(--wp--preset--color--white) !important;}.has-pale-pink-background-color{background-color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-background-color{background-color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-background-color{background-color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-background-color{background-color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-background-color{background-color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-background-color{background-color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-background-color{background-color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-background-color{background-color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-background-color{background-color: var(--wp--preset--color--vivid-purple) !important;}.has-black-border-color{border-color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-border-color{border-color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-border-color{border-color: var(--wp--preset--color--white) !important;}.has-pale-pink-border-color{border-color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-border-color{border-color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-border-color{border-color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-border-color{border-color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-border-color{border-color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-border-color{border-color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-border-color{border-color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-border-color{border-color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-border-color{border-color: var(--wp--preset--color--vivid-purple) !important;}.has-vivid-cyan-blue-to-vivid-purple-gradient-background{background: var(--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple) !important;}.has-light-green-cyan-to-vivid-green-cyan-gradient-background{background: var(--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan) !important;}.has-luminous-vivid-amber-to-luminous-vivid-orange-gradient-background{background: var(--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange) !important;}.has-luminous-vivid-orange-to-vivid-red-gradient-background{background: var(--wp--preset--gradient--luminous-vivid-orange-to-vivid-red) !important;}.has-very-light-gray-to-cyan-bluish-gray-gradient-background{background: var(--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray) !important;}.has-cool-to-warm-spectrum-gradient-background{background: var(--wp--preset--gradient--cool-to-warm-spectrum) !important;}.has-blush-light-purple-gradient-background{background: var(--wp--preset--gradient--blush-light-purple) !important;}.has-blush-bordeaux-gradient-background{background: var(--wp--preset--gradient--blush-bordeaux) !important;}.has-luminous-dusk-gradient-background{background: var(--wp--preset--gradient--luminous-dusk) !important;}.has-pale-ocean-gradient-background{background: var(--wp--preset--gradient--pale-ocean) !important;}.has-electric-grass-gradient-background{background: var(--wp--preset--gradient--electric-grass) !important;}.has-midnight-gradient-background{background: var(--wp--preset--gradient--midnight) !important;}.has-small-font-size{font-size: var(--wp--preset--font-size--small) !important;}.has-medium-font-size{font-size: var(--wp--preset--font-size--medium) !important;}.has-large-font-size{font-size: var(--wp--preset--font-size--large) !important;}.has-x-large-font-size{font-size: var(--wp--preset--font-size--x-large) !important;} :where(.wp-block-post-template.is-layout-flex){gap: 1.25em;}:where(.wp-block-post-template.is-layout-grid){gap: 1.25em;} :where(.wp-block-columns.is-layout-flex){gap: 2em;}:where(.wp-block-columns.is-layout-grid){gap: 2em;} :root :where(.wp-block-pullquote){font-size: 1.5em;line-height: 1.6;} </style> <link rel='stylesheet' id='default-css' href='https://www.issn.org/wp-content/plugins/ajax-wp-query-search-filter/classes/scripts/default.css?ver=all' type='text/css' media='all' /> <link rel='stylesheet' id='contact-form-7-css' href='https://www.issn.org/wp-content/plugins/contact-form-7/includes/css/styles.css?ver=5.9.7' type='text/css' media='all' /> <link rel='stylesheet' id='events-manager-css' href='https://www.issn.org/wp-content/plugins/events-manager/includes/css/events-manager.min.css?ver=6.4.10.2' type='text/css' media='all' /> <style id='events-manager-inline-css' type='text/css'> body .em { --font-family : inherit; --font-weight : inherit; --font-size : 1em; --line-height : inherit; } </style> <link rel='stylesheet' id='UserAccessManagerLoginForm-css' href='https://www.issn.org/wp-content/plugins/user-access-manager/assets/css/uamLoginForm.css?ver=2.2.23' type='text/css' media='screen' /> <link rel='stylesheet' id='wpml-legacy-dropdown-0-css' href='https://www.issn.org/wp-content/plugins/sitepress-multilingual-cms/templates/language-switchers/legacy-dropdown/style.min.css?ver=1' type='text/css' media='all' /> <style id='wpml-legacy-dropdown-0-inline-css' type='text/css'> .wpml-ls-statics-shortcode_actions{background-color:#eeeeee;}.wpml-ls-statics-shortcode_actions, .wpml-ls-statics-shortcode_actions .wpml-ls-sub-menu, .wpml-ls-statics-shortcode_actions a {border-color:#cdcdcd;}.wpml-ls-statics-shortcode_actions a, .wpml-ls-statics-shortcode_actions .wpml-ls-sub-menu a, .wpml-ls-statics-shortcode_actions .wpml-ls-sub-menu a:link, .wpml-ls-statics-shortcode_actions li:not(.wpml-ls-current-language) .wpml-ls-link, .wpml-ls-statics-shortcode_actions li:not(.wpml-ls-current-language) .wpml-ls-link:link {color:#444444;background-color:#ffffff;}.wpml-ls-statics-shortcode_actions a, .wpml-ls-statics-shortcode_actions .wpml-ls-sub-menu a:hover,.wpml-ls-statics-shortcode_actions .wpml-ls-sub-menu a:focus, .wpml-ls-statics-shortcode_actions .wpml-ls-sub-menu a:link:hover, .wpml-ls-statics-shortcode_actions .wpml-ls-sub-menu a:link:focus {color:#000000;background-color:#eeeeee;}.wpml-ls-statics-shortcode_actions .wpml-ls-current-language > a {color:#444444;background-color:#ffffff;}.wpml-ls-statics-shortcode_actions .wpml-ls-current-language:hover>a, .wpml-ls-statics-shortcode_actions .wpml-ls-current-language>a:focus {color:#000000;background-color:#eeeeee;} </style> <link rel='stylesheet' id='flickity-css' href='https://www.issn.org/wp-content/themes/themeissn/css/flickity.css?ver=6a3ad3465064a3df3b5c42a82345fce8' type='text/css' media='all' /> <link rel='stylesheet' id='wp_mailjet_form_builder_widget-widget-front-styles-css' href='https://www.issn.org/wp-content/plugins/mailjet-for-wordpress/src/widgetformbuilder/css/front-widget.css?ver=5.5.3' type='text/css' media='all' /> <link rel='stylesheet' id='newsletter-css' href='https://www.issn.org/wp-content/plugins/newsletter/style.css?ver=8.4.7' type='text/css' media='all' /> <link rel='stylesheet' id='fancybox-css' href='https://www.issn.org/wp-content/plugins/easy-fancybox/fancybox/1.5.4/jquery.fancybox.min.css?ver=6a3ad3465064a3df3b5c42a82345fce8' type='text/css' media='screen' /> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1" id="jquery-core-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1" id="jquery-migrate-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/advance-wp-query-search-filter/js/awqsf-front.js?ver=1.0" id="awqsf-frontjs-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/core.min.js?ver=1.13.3" id="jquery-ui-core-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/mouse.min.js?ver=1.13.3" id="jquery-ui-mouse-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/sortable.min.js?ver=1.13.3" id="jquery-ui-sortable-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/datepicker.min.js?ver=1.13.3" id="jquery-ui-datepicker-js"></script> <script type="text/javascript" id="jquery-ui-datepicker-js-after"> /* <![CDATA[ */ jQuery(function(jQuery){jQuery.datepicker.setDefaults({"closeText":"Close","currentText":"Today","monthNames":["January","February","March","April","May","June","July","August","September","October","November","December"],"monthNamesShort":["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],"nextText":"Next","prevText":"Previous","dayNames":["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],"dayNamesShort":["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],"dayNamesMin":["S","M","T","W","T","F","S"],"dateFormat":"d MM yy","firstDay":1,"isRTL":false});}); /* ]]> */ </script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/resizable.min.js?ver=1.13.3" id="jquery-ui-resizable-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/draggable.min.js?ver=1.13.3" id="jquery-ui-draggable-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/controlgroup.min.js?ver=1.13.3" id="jquery-ui-controlgroup-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/checkboxradio.min.js?ver=1.13.3" id="jquery-ui-checkboxradio-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/button.min.js?ver=1.13.3" id="jquery-ui-button-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/jquery/ui/dialog.min.js?ver=1.13.3" id="jquery-ui-dialog-js"></script> <script type="text/javascript" id="events-manager-js-extra"> /* <![CDATA[ */ var EM = {"ajaxurl":"https:\/\/www.issn.org\/wp-admin\/admin-ajax.php","locationajaxurl":"https:\/\/www.issn.org\/wp-admin\/admin-ajax.php?action=locations_search","firstDay":"1","locale":"en","dateFormat":"yy-mm-dd","ui_css":"https:\/\/www.issn.org\/wp-content\/plugins\/events-manager\/includes\/css\/jquery-ui\/build.min.css","show24hours":"1","is_ssl":"1","autocomplete_limit":"10","calendar":{"breakpoints":{"small":560,"medium":908,"large":false}},"phone":"","datepicker":{"format":"d\/m\/Y"},"search":{"breakpoints":{"small":650,"medium":850,"full":false}},"url":"https:\/\/www.issn.org\/wp-content\/plugins\/events-manager","google_maps_api":"AIzaSyD7unKi8-idqlnyGRCGAj-UOl_GeQVQHUc","bookingInProgress":"Please wait while the booking is being submitted.","tickets_save":"Save Ticket","bookingajaxurl":"https:\/\/www.issn.org\/wp-admin\/admin-ajax.php","bookings_export_save":"Export Bookings","bookings_settings_save":"Save Settings","booking_delete":"Are you sure you want to delete?","booking_offset":"30","bookings":{"submit_button":{"text":{"default":"Send your reservation request","free":"Send your reservation request","payment":"Send your reservation request","processing":"Processing ..."}},"update_listener":""},"bb_full":"unavailable","bb_book":"Book now","bb_booking":"Booking \u2026","bb_booked":"Booking submitted","bb_error":"Booking error. Should we try again?","bb_cancel":"Cancellation","bb_canceling":"Cancellation being processed \u2026","bb_cancelled":"Cancelled","bb_cancel_error":"Cancellation error. Should we try again?","txt_search":"Recherche","txt_searching":"Searching...","txt_loading":"Loading..."}; /* ]]> */ </script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/events-manager/includes/js/events-manager.js?ver=6.4.10.2" id="events-manager-js"></script> <script type="text/javascript" id="wpgmza_data-js-extra"> /* <![CDATA[ */ var wpgmza_google_api_status = {"message":"Enqueued","code":"ENQUEUED"}; /* ]]> */ </script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/wp-google-maps/wpgmza_data.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="wpgmza_data-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/sitepress-multilingual-cms/templates/language-switchers/legacy-dropdown/script.min.js?ver=1" id="wpml-legacy-dropdown-0-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/themes/themeissn/js/jquery.ticker.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="ticker-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/themes/themeissn/js/script-ticker.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="script-ticker-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/themes/themeissn/js/flickity.pkgd.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="flickity-js"></script> <link rel="https://api.w.org/" href="https://www.issn.org/wp-json/" /><link rel="EditURI" type="application/rsd+xml" title="RSD" href="https://www.issn.org/xmlrpc.php?rsd" /> <meta name="generator" content="WPML ver:4.6.12 stt:5,61,1,4,47,2;" /> <link rel="icon" href="https://www.issn.org/wp-content/uploads/2020/12/cropped-logo-2-32x32.jpg" sizes="32x32" /> <link rel="icon" href="https://www.issn.org/wp-content/uploads/2020/12/cropped-logo-2-192x192.jpg" sizes="192x192" /> <link rel="apple-touch-icon" href="https://www.issn.org/wp-content/uploads/2020/12/cropped-logo-2-180x180.jpg" /> <meta name="msapplication-TileImage" content="https://www.issn.org/wp-content/uploads/2020/12/cropped-logo-2-270x270.jpg" /> </head> <body class="blog home"> <!-- Google Tag Manager (noscript) --> <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KRFPCKG" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript> <!-- End Google Tag Manager (noscript) --> <div class="wrapper"> <header class="bandeau"> <a href="https://www.issn.org"><img class="logo" src="https://www.issn.org/wp-content/themes/themeissn/img/logo.jpg" alt="ISSN"></a> <div class="baseline"> <h2>International Identifier for serials<br><span>and other continuing resources, in the electronic and print world</span></h2> </div> <div class="site-outils"> <div class="wpml-ls-statics-shortcode_actions wpml-ls wpml-ls-legacy-dropdown js-wpml-ls-legacy-dropdown" id="lang_sel"> <ul> <li tabindex="0" class="wpml-ls-slot-shortcode_actions wpml-ls-item wpml-ls-item-en wpml-ls-current-language wpml-ls-item-legacy-dropdown"> <a href="#" class="js-wpml-ls-item-toggle wpml-ls-item-toggle lang_sel_sel icl-en"> <img class="wpml-ls-flag iclflag" src="https://www.issn.org/wp-content/plugins/sitepress-multilingual-cms/res/flags/en.png" alt="" width=18 height=12 /><span class="wpml-ls-native icl_lang_sel_native">English</span></a> <ul class="wpml-ls-sub-menu"> <li class="icl-fr wpml-ls-slot-shortcode_actions wpml-ls-item wpml-ls-item-fr wpml-ls-first-item"> <a href="https://www.issn.org/fr/" class="wpml-ls-link"> <img class="wpml-ls-flag iclflag" src="https://www.issn.org/wp-content/plugins/sitepress-multilingual-cms/res/flags/fr.png" alt="" width=18 height=12 /><span class="wpml-ls-native icl_lang_sel_native" lang="fr">Français</span><span class="wpml-ls-display icl_lang_sel_translated"><span class="wpml-ls-bracket icl_lang_sel_bracket"> (</span>French<span class="wpml-ls-bracket icl_lang_sel_bracket">)</span></span></a> </li> <li class="icl-es wpml-ls-slot-shortcode_actions wpml-ls-item wpml-ls-item-es"> <a href="https://www.issn.org/es/" class="wpml-ls-link"> <img class="wpml-ls-flag iclflag" src="https://www.issn.org/wp-content/plugins/sitepress-multilingual-cms/res/flags/es.png" alt="" width=18 height=12 /><span class="wpml-ls-native icl_lang_sel_native" lang="es">Español</span><span class="wpml-ls-display icl_lang_sel_translated"><span class="wpml-ls-bracket icl_lang_sel_bracket"> (</span>Spanish<span class="wpml-ls-bracket icl_lang_sel_bracket">)</span></span></a> </li> <li class="icl-zh-hans wpml-ls-slot-shortcode_actions wpml-ls-item wpml-ls-item-zh-hans"> <a href="https://www.issn.org/zh-hans/" class="wpml-ls-link"> <img class="wpml-ls-flag iclflag" src="https://www.issn.org/wp-content/plugins/sitepress-multilingual-cms/res/flags/zh.png" alt="" width=18 height=12 /><span class="wpml-ls-native icl_lang_sel_native" lang="zh-hans">简体中文</span><span class="wpml-ls-display icl_lang_sel_translated"><span class="wpml-ls-bracket icl_lang_sel_bracket"> (</span>Chinese (Simplified)<span class="wpml-ls-bracket icl_lang_sel_bracket">)</span></span></a> </li> <li class="icl-ar wpml-ls-slot-shortcode_actions wpml-ls-item wpml-ls-item-ar"> <a href="https://www.issn.org/ar/" class="wpml-ls-link"> <img class="wpml-ls-flag iclflag" src="https://www.issn.org/wp-content/plugins/sitepress-multilingual-cms/res/flags/ar.png" alt="" width=18 height=12 /><span class="wpml-ls-native icl_lang_sel_native" lang="ar">العربية</span><span class="wpml-ls-display icl_lang_sel_translated"><span class="wpml-ls-bracket icl_lang_sel_bracket"> (</span>Arabic<span class="wpml-ls-bracket icl_lang_sel_bracket">)</span></span></a> </li> <li class="icl-ru wpml-ls-slot-shortcode_actions wpml-ls-item wpml-ls-item-ru wpml-ls-last-item"> <a href="https://www.issn.org/ru/" class="wpml-ls-link"> <img class="wpml-ls-flag iclflag" src="https://www.issn.org/wp-content/plugins/sitepress-multilingual-cms/res/flags/ru.png" alt="" width=18 height=12 /><span class="wpml-ls-native icl_lang_sel_native" lang="ru">Русский</span><span class="wpml-ls-display icl_lang_sel_translated"><span class="wpml-ls-bracket icl_lang_sel_bracket"> (</span>Russian<span class="wpml-ls-bracket icl_lang_sel_bracket">)</span></span></a> </li> </ul> </li> </ul> </div> <div class="boutons"> <a class="logged-out" title="Extranet"></a> <a title="Search" class="rechercher" id="rechercher-header" href="#"></a> <a title="Contact(s)" id="contacter-header" class="contact" href="#"></a> </div> </div> <div class="zone-rechercher" id="recherche-header" style="display: none;"> <p class="label">Enter a phrase or keyword:</p> <div id="aqsfformid"><form method="get" id="awqsf_search_form_1461" action="https://www.issn.org/"><input type="hidden" name="s" value="d73ffdff63" /><input type="hidden" name="formid" value="1461"><div class="awqsf_box"><center><label class="awqsf-label-keyword"></center></label><input id="awqsf_keyword" type="text" name="skeyword" value="" /><br></div><div class="awqsf_box"><p class="awqsf-button"><input type="submit" id="awqsf_submit" value="Search" alt="[Submit]" name="wqsfsubmit" title="Search" /></p></div></form></div> </div> <!--POUR FORMULAIRE DE CONTACT DU HEADER--> <div class="zone-contact" id="contact-header" style="display: none" > <script type="text/javascript">var gform;gform||(document.addEventListener("gform_main_scripts_loaded",function(){gform.scriptsLoaded=!0}),window.addEventListener("DOMContentLoaded",function(){gform.domLoaded=!0}),gform={domLoaded:!1,scriptsLoaded:!1,initializeOnLoaded:function(o){gform.domLoaded&&gform.scriptsLoaded?o():!gform.domLoaded&&gform.scriptsLoaded?window.addEventListener("DOMContentLoaded",o):document.addEventListener("gform_main_scripts_loaded",o)},hooks:{action:{},filter:{}},addAction:function(o,n,r,t){gform.addHook("action",o,n,r,t)},addFilter:function(o,n,r,t){gform.addHook("filter",o,n,r,t)},doAction:function(o){gform.doHook("action",o,arguments)},applyFilters:function(o){return gform.doHook("filter",o,arguments)},removeAction:function(o,n){gform.removeHook("action",o,n)},removeFilter:function(o,n,r){gform.removeHook("filter",o,n,r)},addHook:function(o,n,r,t,i){null==gform.hooks[o][n]&&(gform.hooks[o][n]=[]);var e=gform.hooks[o][n];null==i&&(i=n+"_"+e.length),gform.hooks[o][n].push({tag:i,callable:r,priority:t=null==t?10:t})},doHook:function(n,o,r){var t;if(r=Array.prototype.slice.call(r,1),null!=gform.hooks[n][o]&&((o=gform.hooks[n][o]).sort(function(o,n){return o.priority-n.priority}),o.forEach(function(o){"function"!=typeof(t=o.callable)&&(t=window[t]),"action"==n?t.apply(null,r):r[0]=t.apply(null,r)})),"filter"==n)return r[0]},removeHook:function(o,n,t,i){var r;null!=gform.hooks[o][n]&&(r=(r=gform.hooks[o][n]).filter(function(o,n,r){return!!(null!=i&&i!=o.tag||null!=t&&t!=o.priority)}),gform.hooks[o][n]=r)}});</script> <div class='gf_browser_opera gform_wrapper gform_legacy_markup_wrapper gform-theme--no-framework' data-form-theme='legacy' data-form-index='0' id='gform_wrapper_1' style='display:none'><style>#gform_wrapper_1[data-form-index="0"].gform-theme,[data-parent-form="1_0"]{--gf-color-primary: #204ce5;--gf-color-primary-rgb: 32, 76, 229;--gf-color-primary-contrast: #fff;--gf-color-primary-contrast-rgb: 255, 255, 255;--gf-color-primary-darker: #001AB3;--gf-color-primary-lighter: #527EFF;--gf-color-secondary: #fff;--gf-color-secondary-rgb: 255, 255, 255;--gf-color-secondary-contrast: #112337;--gf-color-secondary-contrast-rgb: 17, 35, 55;--gf-color-secondary-darker: #F5F5F5;--gf-color-secondary-lighter: #FFFFFF;--gf-color-out-ctrl-light: rgba(17, 35, 55, 0.1);--gf-color-out-ctrl-light-rgb: 17, 35, 55;--gf-color-out-ctrl-light-darker: rgba(104, 110, 119, 0.35);--gf-color-out-ctrl-light-lighter: #F5F5F5;--gf-color-out-ctrl-dark: #585e6a;--gf-color-out-ctrl-dark-rgb: 88, 94, 106;--gf-color-out-ctrl-dark-darker: #112337;--gf-color-out-ctrl-dark-lighter: rgba(17, 35, 55, 0.65);--gf-color-in-ctrl: #fff;--gf-color-in-ctrl-rgb: 255, 255, 255;--gf-color-in-ctrl-contrast: #112337;--gf-color-in-ctrl-contrast-rgb: 17, 35, 55;--gf-color-in-ctrl-darker: #F5F5F5;--gf-color-in-ctrl-lighter: #FFFFFF;--gf-color-in-ctrl-primary: #204ce5;--gf-color-in-ctrl-primary-rgb: 32, 76, 229;--gf-color-in-ctrl-primary-contrast: #fff;--gf-color-in-ctrl-primary-contrast-rgb: 255, 255, 255;--gf-color-in-ctrl-primary-darker: #001AB3;--gf-color-in-ctrl-primary-lighter: #527EFF;--gf-color-in-ctrl-light: rgba(17, 35, 55, 0.1);--gf-color-in-ctrl-light-rgb: 17, 35, 55;--gf-color-in-ctrl-light-darker: rgba(104, 110, 119, 0.35);--gf-color-in-ctrl-light-lighter: #F5F5F5;--gf-color-in-ctrl-dark: #585e6a;--gf-color-in-ctrl-dark-rgb: 88, 94, 106;--gf-color-in-ctrl-dark-darker: #112337;--gf-color-in-ctrl-dark-lighter: rgba(17, 35, 55, 0.65);--gf-radius: 3px;--gf-font-size-secondary: 14px;--gf-font-size-tertiary: 13px;--gf-icon-ctrl-number: url("data:image/svg+xml,%3Csvg width='8' height='14' viewBox='0 0 8 14' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M4 0C4.26522 5.96046e-08 4.51957 0.105357 4.70711 0.292893L7.70711 3.29289C8.09763 3.68342 8.09763 4.31658 7.70711 4.70711C7.31658 5.09763 6.68342 5.09763 6.29289 4.70711L4 2.41421L1.70711 4.70711C1.31658 5.09763 0.683417 5.09763 0.292893 4.70711C-0.0976311 4.31658 -0.097631 3.68342 0.292893 3.29289L3.29289 0.292893C3.48043 0.105357 3.73478 0 4 0ZM0.292893 9.29289C0.683417 8.90237 1.31658 8.90237 1.70711 9.29289L4 11.5858L6.29289 9.29289C6.68342 8.90237 7.31658 8.90237 7.70711 9.29289C8.09763 9.68342 8.09763 10.3166 7.70711 10.7071L4.70711 13.7071C4.31658 14.0976 3.68342 14.0976 3.29289 13.7071L0.292893 10.7071C-0.0976311 10.3166 -0.0976311 9.68342 0.292893 9.29289Z' fill='rgba(17, 35, 55, 0.65)'/%3E%3C/svg%3E");--gf-icon-ctrl-select: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M0.292893 0.292893C0.683417 -0.097631 1.31658 -0.097631 1.70711 0.292893L5 3.58579L8.29289 0.292893C8.68342 -0.0976311 9.31658 -0.0976311 9.70711 0.292893C10.0976 0.683417 10.0976 1.31658 9.70711 1.70711L5.70711 5.70711C5.31658 6.09763 4.68342 6.09763 4.29289 5.70711L0.292893 1.70711C-0.0976311 1.31658 -0.0976311 0.683418 0.292893 0.292893Z' fill='rgba(17, 35, 55, 0.65)'/%3E%3C/svg%3E");--gf-icon-ctrl-search: url("data:image/svg+xml,%3Csvg version='1.1' xmlns='http://www.w3.org/2000/svg' width='640' height='640'%3E%3Cpath d='M256 128c-70.692 0-128 57.308-128 128 0 70.691 57.308 128 128 128 70.691 0 128-57.309 128-128 0-70.692-57.309-128-128-128zM64 256c0-106.039 85.961-192 192-192s192 85.961 192 192c0 41.466-13.146 79.863-35.498 111.248l154.125 154.125c12.496 12.496 12.496 32.758 0 45.254s-32.758 12.496-45.254 0L367.248 412.502C335.862 434.854 297.467 448 256 448c-106.039 0-192-85.962-192-192z' fill='rgba(17, 35, 55, 0.65)'/%3E%3C/svg%3E");--gf-label-space-y-secondary: var(--gf-label-space-y-md-secondary);--gf-ctrl-border-color: #686e77;--gf-ctrl-size: var(--gf-ctrl-size-md);--gf-ctrl-label-color-primary: #112337;--gf-ctrl-label-color-secondary: #112337;--gf-ctrl-choice-size: var(--gf-ctrl-choice-size-md);--gf-ctrl-checkbox-check-size: var(--gf-ctrl-checkbox-check-size-md);--gf-ctrl-radio-check-size: var(--gf-ctrl-radio-check-size-md);--gf-ctrl-btn-font-size: var(--gf-ctrl-btn-font-size-md);--gf-ctrl-btn-padding-x: var(--gf-ctrl-btn-padding-x-md);--gf-ctrl-btn-size: var(--gf-ctrl-btn-size-md);--gf-ctrl-btn-border-color-secondary: #686e77;--gf-ctrl-file-btn-bg-color-hover: #EBEBEB;--gf-field-pg-steps-number-color: rgba(17, 35, 55, 0.8);}</style><div id='gf_1' class='gform_anchor' tabindex='-1'></div><form method='post' enctype='multipart/form-data' target='gform_ajax_frame_1' id='gform_1' action='/#gf_1' data-formid='1' novalidate> <div class='gform-body gform_body'><ul id='gform_fields_1' class='gform_fields top_label form_sublabel_below description_below validation_below'><li id="field_1_1" class="gfield gfield--type-select field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible" data-js-reload="field_1_1" ><label class='gfield_label gform-field-label' for='input_1_1'>Contact</label><div class='ginput_container ginput_container_select'><select name='input_1' id='input_1_1' class='medium gfield_select' aria-invalid="false" ><option value='Data and standards department' >Data and standards department</option><option value='Secretariat' >Secretariat</option><option value='Sales Department' >Sales Department</option></select></div></li><li id="field_1_2" class="gfield gfield--type-text field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible" data-js-reload="field_1_2" ><label class='gfield_label gform-field-label' for='input_1_2'>Subject</label><div class='ginput_container ginput_container_text'><input name='input_2' id='input_1_2' type='text' value='' class='medium' aria-invalid="false" /> </div></li><li id="field_1_3" class="gfield gfield--type-select field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible" data-js-reload="field_1_3" ><label class='gfield_label gform-field-label' for='input_1_3'>Subject</label><div class='ginput_container ginput_container_select'><select name='input_3' id='input_1_3' class='medium gfield_select' aria-invalid="false" ><option value='ISSN Products and Services' >ISSN Products and Services</option><option value='LTWA' >LTWA</option><option value='Downloading ISSN-L table' >Downloading ISSN-L table</option><option value='ISSN Certificate' >ISSN Certificate</option><option value='ISSN Premium' >ISSN Premium</option><option value='Other' >Other</option></select></div></li><li id="field_1_4" class="gfield gfield--type-email gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible" data-js-reload="field_1_4" ><label class='gfield_label gform-field-label' for='input_1_4'>Email<span class="gfield_required"><span class="gfield_required gfield_required_asterisk">*</span></span></label><div class='ginput_container ginput_container_email'> <input name='input_4' id='input_1_4' type='email' value='' class='medium' aria-required="true" aria-invalid="false" /> </div></li><li id="field_1_5" class="gfield gfield--type-checkbox gfield--type-choice field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible" data-js-reload="field_1_5" ><label class='gfield_label gform-field-label gfield_label_before_complex' >Send me a copy</label><div class='ginput_container ginput_container_checkbox'><ul class='gfield_checkbox' id='input_1_5'><li class='gchoice gchoice_1_5_1'> <input class='gfield-choice-input' name='input_5.1' type='checkbox' value='1' id='choice_1_5_1' /> <label for='choice_1_5_1' id='label_1_5_1' class='gform-field-label gform-field-label--type-inline'></label> </li></ul></div></li><li id="field_1_6" class="gfield gfield--type-textarea field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible" data-js-reload="field_1_6" ><label class='gfield_label gform-field-label' for='input_1_6'>Message</label><div class='ginput_container ginput_container_textarea'><textarea name='input_6' id='input_1_6' class='textarea medium' placeholder='Your message' aria-invalid="false" rows='10' cols='50'></textarea></div></li><li id="field_1_8" class="gfield gfield--type-gf_no_captcha_recaptcha field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible" data-js-reload="field_1_8" ><label class='gfield_label gform-field-label' for='input_1_8'>Captcha</label><div class="ginput_container"><div class="g-recaptcha" data-sitekey="6LfSShIUAAAAALvMYYhBpXvvNgMUCAEDz9wvkAGu" data-theme="light"></div></div></li><li id="field_1_9" class="gfield gfield--type-honeypot gform_validation_container field_sublabel_below gfield--has-description field_description_below field_validation_below gfield_visibility_visible" data-js-reload="field_1_9" ><label class='gfield_label gform-field-label' for='input_1_9'>Name</label><div class='ginput_container'><input name='input_9' id='input_1_9' type='text' value='' autocomplete='new-password'/></div><div class='gfield_description' id='gfield_description_1_9'>This field is for validation purposes and should be left unchanged.</div></li></ul></div> <div class='gform_footer top_label'> <input type='submit' id='gform_submit_button_1' class='gform_button button' value='SEND' onclick='if(window["gf_submitting_1"]){return false;} if( !jQuery("#gform_1")[0].checkValidity || jQuery("#gform_1")[0].checkValidity()){window["gf_submitting_1"]=true;} ' onkeypress='if( event.keyCode == 13 ){ if(window["gf_submitting_1"]){return false;} if( !jQuery("#gform_1")[0].checkValidity || jQuery("#gform_1")[0].checkValidity()){window["gf_submitting_1"]=true;} jQuery("#gform_1").trigger("submit",[true]); }' /> <input type='hidden' name='gform_ajax' value='form_id=1&amp;title=&amp;description=&amp;tabindex=0&amp;theme=legacy' /> <input type='hidden' class='gform_hidden' name='is_submit_1' value='1' /> <input type='hidden' class='gform_hidden' name='gform_submit' value='1' /> <input type='hidden' class='gform_hidden' name='gform_unique_id' value='' /> <input type='hidden' class='gform_hidden' name='state_1' value='WyJbXSIsIjdiNjc0YmZmZTNkZDdiZjk0YzY0OTI0Y2VjODEzMTZiIl0=' /> <input type='hidden' class='gform_hidden' name='gform_target_page_number_1' id='gform_target_page_number_1' value='0' /> <input type='hidden' class='gform_hidden' name='gform_source_page_number_1' id='gform_source_page_number_1' value='1' /> <input type='hidden' name='gform_field_values' value='' /> </div> </form> </div> <iframe style='display:none;width:0px;height:0px;' src='about:blank' name='gform_ajax_frame_1' id='gform_ajax_frame_1' title='This iframe contains the logic required to handle Ajax powered Gravity Forms.'></iframe> <script type="text/javascript"> /* <![CDATA[ */ gform.initializeOnLoaded( function() {gformInitSpinner( 1, 'https://www.issn.org/wp-content/plugins/gravityforms/images/spinner.svg', true );jQuery('#gform_ajax_frame_1').on('load',function(){var contents = jQuery(this).contents().find('*').html();var is_postback = contents.indexOf('GF_AJAX_POSTBACK') >= 0;if(!is_postback){return;}var form_content = jQuery(this).contents().find('#gform_wrapper_1');var is_confirmation = jQuery(this).contents().find('#gform_confirmation_wrapper_1').length > 0;var is_redirect = contents.indexOf('gformRedirect(){') >= 0;var is_form = form_content.length > 0 && ! is_redirect && ! is_confirmation;var mt = parseInt(jQuery('html').css('margin-top'), 10) + parseInt(jQuery('body').css('margin-top'), 10) + 100;if(is_form){form_content.find('form').css('opacity', 0);jQuery('#gform_wrapper_1').html(form_content.html());if(form_content.hasClass('gform_validation_error')){jQuery('#gform_wrapper_1').addClass('gform_validation_error');} else {jQuery('#gform_wrapper_1').removeClass('gform_validation_error');}setTimeout( function() { /* delay the scroll by 50 milliseconds to fix a bug in chrome */ jQuery(document).scrollTop(jQuery('#gform_wrapper_1').offset().top - mt); }, 50 );if(window['gformInitDatepicker']) {gformInitDatepicker();}if(window['gformInitPriceFields']) {gformInitPriceFields();}var current_page = jQuery('#gform_source_page_number_1').val();gformInitSpinner( 1, 'https://www.issn.org/wp-content/plugins/gravityforms/images/spinner.svg', true );jQuery(document).trigger('gform_page_loaded', [1, current_page]);window['gf_submitting_1'] = false;}else if(!is_redirect){var confirmation_content = jQuery(this).contents().find('.GF_AJAX_POSTBACK').html();if(!confirmation_content){confirmation_content = contents;}jQuery('#gform_wrapper_1').replaceWith(confirmation_content);jQuery(document).scrollTop(jQuery('#gf_1').offset().top - mt);jQuery(document).trigger('gform_confirmation_loaded', [1]);window['gf_submitting_1'] = false;wp.a11y.speak(jQuery('#gform_confirmation_message_1').text());}else{jQuery('#gform_1').append(contents);if(window['gformRedirect']) {gformRedirect();}}jQuery(document).trigger("gform_pre_post_render", [{ formId: "1", currentPage: "current_page", abort: function() { this.preventDefault(); } }]); if (event && event.defaultPrevented) { return; } const gformWrapperDiv = document.getElementById( "gform_wrapper_1" ); if ( gformWrapperDiv ) { const visibilitySpan = document.createElement( "span" ); visibilitySpan.id = "gform_visibility_test_1"; gformWrapperDiv.insertAdjacentElement( "afterend", visibilitySpan ); } const visibilityTestDiv = document.getElementById( "gform_visibility_test_1" ); let postRenderFired = false; function triggerPostRender() { if ( postRenderFired ) { return; } postRenderFired = true; jQuery( document ).trigger( 'gform_post_render', [1, current_page] ); gform.utils.trigger( { event: 'gform/postRender', native: false, data: { formId: 1, currentPage: current_page } } ); if ( visibilityTestDiv ) { visibilityTestDiv.parentNode.removeChild( visibilityTestDiv ); } } function debounce( func, wait, immediate ) { var timeout; return function() { var context = this, args = arguments; var later = function() { timeout = null; if ( !immediate ) func.apply( context, args ); }; var callNow = immediate && !timeout; clearTimeout( timeout ); timeout = setTimeout( later, wait ); if ( callNow ) func.apply( context, args ); }; } const debouncedTriggerPostRender = debounce( function() { triggerPostRender(); }, 200 ); if ( visibilityTestDiv && visibilityTestDiv.offsetParent === null ) { const observer = new MutationObserver( ( mutations ) => { mutations.forEach( ( mutation ) => { if ( mutation.type === 'attributes' && visibilityTestDiv.offsetParent !== null ) { debouncedTriggerPostRender(); observer.disconnect(); } }); }); observer.observe( document.body, { attributes: true, childList: false, subtree: true, attributeFilter: [ 'style', 'class' ], }); } else { triggerPostRender(); } } );} ); /* ]]> */ </script> </div> </header> <div class="nav-container"> <nav class="sticky-navigation navigation-principale"> <a href="https://www.issn.org"><img class="accueil" src="https://www.issn.org/wp-content/themes/themeissn/img/home.png" alt="ISSN"></a> <ul id="menu-menusen" class="menu"><li id="menu-item-1471" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1471"><a href="#">The Centre and the Network</a> <ul class="sub-menu"> <li id="menu-item-1472" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1472"><a href="#">Our mission</a> <ul class="sub-menu"> <li id="menu-item-1473" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1473"><a href="https://www.issn.org/the-centre-and-the-network/our-mission/the-international-centre-for-the-registration-of-serial-publications-cieps/">The ISSN International Centre</a></li> <li id="menu-item-1474" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1474"><a href="https://www.issn.org/the-centre-and-the-network/our-mission/our-strategy/">Annual Reports and Plans</a></li> </ul> </li> <li id="menu-item-1475" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1475"><a href="#">Our Organization</a> <ul class="sub-menu"> <li id="menu-item-1476" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1476"><a href="https://www.issn.org/the-centre-and-the-network/our-organization/le-reseau-issn-en/">The ISSN Network</a></li> <li id="menu-item-1477" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1477"><a href="https://www.issn.org/the-centre-and-the-network/our-organization/issn-operations/">ISSN statutes</a></li> <li id="menu-item-1478" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1478"><a href="https://www.issn.org/the-centre-and-the-network/our-organization/issn-bodies/">ISSN bodies</a></li> </ul> </li> <li id="menu-item-4523" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-4523"><a href="#">Members countries</a> <ul class="sub-menu"> <li id="menu-item-1480" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1480"><a href="https://www.issn.org/the-centre-and-the-network/members-countries/the-issn-network-today/">The ISSN Network today</a></li> <li id="menu-item-1481" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1481"><a href="https://www.issn.org/the-centre-and-the-network/members-countries/become-a-member-of-the-issn-network/">Become a member of the ISSN Network</a></li> <li id="menu-item-1482" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1482"><a href="https://www.issn.org/the-centre-and-the-network/members-countries/why-join-the-issn/">Why join the ISSN?</a></li> </ul> </li> <li id="menu-item-1483" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1483"><a href="https://www.issn.org/the-centre-and-the-network/our-partners/">Our partners</a></li> <li id="menu-item-11654" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-11654"><a href="https://www.issn.org/the-centre-and-the-network/our-projects/">Our projects</a></li> </ul> </li> <li id="menu-item-1485" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1485"><a href="#">Understanding the ISSN</a> <ul class="sub-menu"> <li id="menu-item-1486" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1486"><a href="https://www.issn.org/understanding-the-issn/what-is-an-issn/">ISSN in short</a></li> <li id="menu-item-1487" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1487"><a href="#">Assignment rules and formats</a> <ul class="sub-menu"> <li id="menu-item-1488" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1488"><a href="https://www.issn.org/understanding-the-issn/assignment-rules/issn-the-major-principles/">Assignment policy</a></li> <li id="menu-item-1489" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1489"><a href="https://www.issn.org/understanding-the-issn/assignment-rules/the-issn-for-electronic-media/">The ISSN for electronic media</a></li> <li id="menu-item-1490" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1490"><a href="https://www.issn.org/understanding-the-issn/assignment-rules/the-issn-l-for-publications-on-multiple-media/">Linking ISSN</a></li> <li id="menu-item-1491" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1491"><a href="https://www.issn.org/understanding-the-issn/assignment-rules/learn-more-about-how-issn-are-assigned/">Learn more</a></li> <li id="menu-item-2717" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2717"><a href="https://www.issn.org/understanding-the-issn/assignment-rules/issn-manual/">ISSN Manual</a></li> <li id="menu-item-11544" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-11544"><a href="https://www.issn.org/understanding-the-issn/assignment-rules/issn-marc21-and-unimarc-profiles/">ISSN MARC21 and UNIMARC profiles</a></li> <li id="menu-item-11783" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-11783"><a href="https://www.issn.org/understanding-the-issn/assignment-rules/pressoo/">PRESSoo</a></li> <li id="menu-item-16898" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-16898"><a href="https://www.issn.org/understanding-the-issn/assignment-rules/issn-linked-data-application-profile/">ISSN linked data application profile</a></li> </ul> </li> <li id="menu-item-1492" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1492"><a href="#">ISSN uses</a> <ul class="sub-menu"> <li id="menu-item-1493" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1493"><a href="https://www.issn.org/understanding-the-issn/issn-uses/identification-with-the-ean-13-barcode/">Use of ISSN in GTIN codes</a></li> <li id="menu-item-9049" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-9049"><a href="https://www.issn.org/understanding-the-issn/issn-uses/use-of-issn-in-doi/">Use of ISSN in DOI</a></li> <li id="menu-item-1494" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1494"><a href="https://www.issn.org/understanding-the-issn/issn-uses/practical-uses-of-the-issn/">Practical uses of the ISSN</a></li> </ul> </li> <li id="menu-item-1514" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1514"><a href="https://www.issn.org/understanding-the-issn/the-issn-international-register/">The ISSN International Portal</a></li> <li id="menu-item-1517" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1517"><a href="https://www.issn.org/understanding-the-issn/standardization/">Standardization</a></li> </ul> </li> <li id="menu-item-1518" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1518"><a href="#">Services</a> <ul class="sub-menu"> <li id="menu-item-1519" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-1519"><a href="https://www.issn.org/services/requesting-an-issn/">Requesting an ISSN</a> <ul class="sub-menu"> <li id="menu-item-1521" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1521"><a href="https://www.issn.org/services/requesting-an-issn/contact-an-issn-national-centre/">National Centres Directory</a></li> <li id="menu-item-1522" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1522"><a href="https://www.issn.org/services/requesting-an-issn/contact-the-issn-international-centre/">International Centre Directory</a></li> <li id="menu-item-1523" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1523"><a href="https://www.issn.org/services/requesting-an-issn/the-issn-for-multinational-publishers/">Multinational Publishers Directory</a></li> </ul> </li> <li id="menu-item-1524" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-1524"><a href="https://www.issn.org/services/subscribe-to-the-register/">Subscribe to the ISSN Portal</a> <ul class="sub-menu"> <li id="menu-item-1525" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1525"><a href="https://www.issn.org/services/subscribe-to-the-register/subscription-options/">Subscription options</a></li> <li id="menu-item-4393" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-4393"><a href="https://www.issn.org/services/subscribe-to-the-register/pricing/">Pricing</a></li> </ul> </li> <li id="menu-item-1526" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1526"><a href="#">Online Services</a> <ul class="sub-menu"> <li id="menu-item-5650" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-5650"><a href="https://www.issn.org/services/online-services/road-the-directory-of-open-access-scholarly-resources/">ROAD</a></li> <li id="menu-item-25307" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-25307"><a href="https://www.issn.org/services/online-services/etas-service/">TAS</a></li> <li id="menu-item-26536" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-26536"><a href="https://www.issn.org/services/online-services/keepers-registry/">Keepers Registry</a></li> <li id="menu-item-1527" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1527"><a href="https://www.issn.org/services/online-services/access-to-issn-l-table/">ISSN-L table (linking ISSN)</a></li> <li id="menu-item-1528" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1528"><a href="https://www.issn.org/services/online-services/access-to-the-ltwa/">Title word abbreviations (ISO 4 standard)</a></li> <li id="menu-item-28679" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-28679"><a href="https://www.issn.org/services/online-services/urn/">URN</a></li> </ul> </li> <li id="menu-item-1529" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-1529"><a href="#">Customised services</a> <ul class="sub-menu"> <li id="menu-item-1531" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1531"><a href="https://www.issn.org/services/customised-services/issn-premium-customised-processing-of-your-data/">ISSN Premium</a></li> <li id="menu-item-7494" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-7494"><a href="https://www.issn.org/services/customised-services/the-issn-certificate-an-identity-card-for-your-publications/">The ISSN ID certificate</a></li> </ul> </li> </ul> </li> </ul> </nav> </div><section class="main"> <div class="carousel"> <div class="carousel js-flickity" data-flickity-options='{ "imagesLoaded": true, "autoPlay": 4000, "cellAlign": "left", "prevNextButtons": false }'> <div class="carousel-cell"> <figure> <img width="350" height="350" src="https://www.issn.org/wp-content/uploads/2015/12/issn_portal_carousel_slide_03.png" class="attachment-post-thumbnail size-post-thumbnail wp-post-image" alt="" decoding="async" loading="lazy" srcset="https://www.issn.org/wp-content/uploads/2015/12/issn_portal_carousel_slide_03.png 350w, https://www.issn.org/wp-content/uploads/2015/12/issn_portal_carousel_slide_03-300x300.png 300w, https://www.issn.org/wp-content/uploads/2015/12/issn_portal_carousel_slide_03-150x150.png 150w" sizes="(max-width: 350px) 100vw, 350px" /> </figure> <div class="tc-desc"> <p> <p>The ISSN Network is comprised of ISSN National Centres.<br /> Their activity is coordinated by the ISSN International<br /> Centre located in Paris.</p> </p> <h4><a class="read more bouton" href="https://www.issn.org/the-centre-and-the-network/our-organization/le-reseau-issn-en/">Read more</a></h4> </div> </div> <div class="carousel-cell"> <figure> <img width="350" height="350" src="https://www.issn.org/wp-content/uploads/2016/02/issn_portal_carousel_slide_05_road.png" class="attachment-post-thumbnail size-post-thumbnail wp-post-image" alt="" decoding="async" loading="lazy" srcset="https://www.issn.org/wp-content/uploads/2016/02/issn_portal_carousel_slide_05_road.png 350w, https://www.issn.org/wp-content/uploads/2016/02/issn_portal_carousel_slide_05_road-300x300.png 300w, https://www.issn.org/wp-content/uploads/2016/02/issn_portal_carousel_slide_05_road-150x150.png 150w" sizes="(max-width: 350px) 100vw, 350px" /> </figure> <div class="tc-desc"> <p> <p>ROAD references nearly 49,000 multidisciplinary resources identified by 92 ISSN centres worldwide, with 17 partners providing quality insight.</p> </p> <h4><a class="read more bouton" href="https://www.issn.org/services/online-services/road-the-directory-of-open-access-scholarly-resources/">Read more</a></h4> </div> </div> <div class="carousel-cell"> <figure> <img width="350" height="350" src="https://www.issn.org/wp-content/uploads/2019/09/issn_portal_carousel_slide_img_portal_logo.png" class="attachment-post-thumbnail size-post-thumbnail wp-post-image" alt="" decoding="async" loading="lazy" srcset="https://www.issn.org/wp-content/uploads/2019/09/issn_portal_carousel_slide_img_portal_logo.png 350w, https://www.issn.org/wp-content/uploads/2019/09/issn_portal_carousel_slide_img_portal_logo-300x300.png 300w, https://www.issn.org/wp-content/uploads/2019/09/issn_portal_carousel_slide_img_portal_logo-150x150.png 150w" sizes="(max-width: 350px) 100vw, 350px" /> </figure> <div class="tc-desc"> <p> <p>2.5 million ISSN assigned,<br /> more than 70,000 new ISSN per year and 130,000 ISSN modified per year: https://portal.issn.org</p> </p> <h4><a class="read more bouton" href="https://www.issn.org/understanding-the-issn/the-issn-international-register/">Read more</a></h4> </div> </div> <div class="carousel-cell"> <figure> </figure> <div class="tc-desc"> <p> <p>The ISSN uses URN as a persistent identifier specifically designed by the Internet Engineering Task Force (IETF). http://urn.issn.org/</p> </p> <h4><a class="read more bouton" href="https://www.issn.org/services/online-services/urn/">read more</a></h4> </div> </div> <div class="carousel-cell"> <figure> <img width="350" height="350" src="https://www.issn.org/wp-content/uploads/2019/12/issn_portal_carousel_img_logo_the_keepers.png" class="attachment-post-thumbnail size-post-thumbnail wp-post-image" alt="" decoding="async" loading="lazy" srcset="https://www.issn.org/wp-content/uploads/2019/12/issn_portal_carousel_img_logo_the_keepers.png 350w, https://www.issn.org/wp-content/uploads/2019/12/issn_portal_carousel_img_logo_the_keepers-300x300.png 300w, https://www.issn.org/wp-content/uploads/2019/12/issn_portal_carousel_img_logo_the_keepers-150x150.png 150w" sizes="(max-width: 350px) 100vw, 350px" /> </figure> <div class="tc-desc"> <p> <p>Keepers Registry acts as a global monitor on the archiving arrangements for digital journals: https://keepers.issn.org/</p> </p> <h4><a class="read more bouton" href="https://www.issn.org/services/online-services/keepers-registry/">Read more</a></h4> </div> </div> </div> </div> <aside class="sidebar"> <div class="rebond"> <h3 class="rebond-en"><a href="https://www.issn.org/services/requesting-an-issn/" rel="bookmark">Requesting an ISSN</a></h3> </div> <div class="rebond"> <h3 class="rebond-en"><a href="https://www.issn.org/the-centre-and-the-network/members-countries/the-issn-network-today/" rel="bookmark">Find a national centre</a></h3> </div> <div class="rebond"> <h3 class="rebond-en"><a href="https://www.issn.org/services/subscribe-to-the-register/pricing/" rel="bookmark">Subscribe to the ISSN Portal</a></h3> </div> </aside> <section class="news"> <p class="bouton"><a href="https://www.issn.org/rubrique/actu-en/" title="Actualités">News +</a></p> <ul id="ticker"> <li><span class="date">2024/11/06 - </span><a href="https://www.issn.org/the-issn-international-centre-takes-part-in-the-charleston-library-conference-2024-charleston-usa-12-15-november-2024/"> <strong>The ISSN International Centre takes part in the Charleston Library Conference 2024 (Charleston, USA, 12-15 November 2024)</strong> Each year this conference brings together more than 2,000 information professionals and exhibitors. On ...</a></li> <li><span class="date">2024/10/15 - </span><a href="https://www.issn.org/research-information-publishes-an-article-on-the-development-of-the-issn-international-centre-since-2014/"> <strong>Research Information publishes an article on the development of the ISSN International Centre since 2014</strong> Ga&euml;lle B&eacute;quet, Director of the ISSN International Centre, takes stock of the organisation's development since 2014. In...</a></li> <li><span class="date">2024/10/11 - </span><a href="https://www.issn.org/issn-ic-frankfurt-book-fair/"> <strong>ISSN IC @ Frankfurt Book Fair!</strong> The ISSN International Centre will be at Frankfurt Book Fair on October 16 &amp; 17, 2024......</a></li> </ul> </section> </section> <footer class="footer"> <div class="col-gauche"> <nav class="pied-de-page"> <ul id="menu-menu-footer-1-en" class="menu"><li id="menu-item-3263" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3263"><a href="https://www.issn.org/the-centre-and-the-network/our-mission/the-international-centre-for-the-registration-of-serial-publications-cieps/">Who are we ?</a></li> <li id="menu-item-5283" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-5283"><a href="https://www.issn.org/services/requesting-an-issn/contact-the-issn-international-centre/">Contact us</a></li> <li id="menu-item-3268" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3268"><a href="https://www.issn.org/site-map/">Site map</a></li> <li id="menu-item-14337" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-14337"><a href="https://www.issn.org/site-archives/">Site archives</a></li> </ul> <ul id="menu-menu-footer-2-en" class="menu"><li id="menu-item-3270" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-3270"><a href="https://portal.issn.org">ISSN Portal</a></li> <li id="menu-item-3269" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3269"><a href="https://www.issn.org/legal-notices/">Statutory copyright information</a></li> <li id="menu-item-10896" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-10896"><a href="https://www.issn.org/career/">Careers</a></li> </ul> </nav> <div class="fb"> <h3><p>Join us</p> <a target="_blank" href="https://fr-fr.facebook.com/ISSNInternationalCentre"><img src="https://www.issn.org/wp-content/themes/themeissn/img/facebook.png" width="41" height="41" alt="twitter" /></a> <a target="_blank" href="https://twitter.com/ISSN_IC"><img src="https://www.issn.org/wp-content/themes/themeissn/img/twitter.png" width="41" height="41" alt="twitter" /></a> </h3> </div> </div> <div class="col-centre log-in"> <h3>ISSN Community for National Centres only</h3> <form name="loginform" id="loginform" action="https://www.issn.org/mon-admin/" method="post"><p class="login-username"> <label for="user_login">Username or Email Address</label> <input type="text" name="log" id="user_login" autocomplete="username" class="input" value="" size="20" /> </p><p class="login-password"> <label for="user_pass">Password</label> <input type="password" name="pwd" id="user_pass" autocomplete="current-password" spellcheck="false" class="input" value="" size="20" /> </p><p class="login-submit"> <input type="submit" name="wp-submit" id="wp-submit" class="button button-primary" value="Log In" /> <input type="hidden" name="redirect_to" value="https://www.issn.org/" /> </p></form> <a href="https://www.issn.org/mon-admin/?action=lostpassword" class="mdp">Forgot your password ?</a> </div> <div class="col-droite newsletter"> <h3>Newsletter<br />Subscribe</h3> <script type="text/javascript"> //<![CDATA[ if (typeof newsletter_check !== "function") { window.newsletter_check = function (f) { var re = /^([a-zA-Z0-9_\.\-\+])+\@(([a-zA-Z0-9\-]{1,})+\.)+([a-zA-Z0-9]{2,})+$/; if (!re.test(f.elements["ne"].value)) { alert("The email is not correct"); return false; } if (f.elements["ny"] && !f.elements["ny"].checked) { alert("You must accept the privacy statement"); return false; } return true; } } //]]> </script> <form method="post" action="https://www.issn.org?na=s" onsubmit="return newsletter_check(this)" > <input name="ne" type="email" size="30" placeholder="Enter your e-mail" required> <input class="bouton" name="envoyer" type="submit" value="Send"> </form> <p><a href="https://www.issn.org/?na=view&id=605">View the latest issue of the newsletter</a><br> <a href="https://www.issn.org/newsletters/">View all the newsletter issues </a></p> </div> </footer> </div> <link rel='stylesheet' id='gforms_reset_css-css' href='https://www.issn.org/wp-content/plugins/gravityforms/legacy/css/formreset.min.css?ver=2.8.14' type='text/css' media='all' /> <link rel='stylesheet' id='gforms_formsmain_css-css' href='https://www.issn.org/wp-content/plugins/gravityforms/legacy/css/formsmain.min.css?ver=2.8.14' type='text/css' media='all' /> <link rel='stylesheet' id='gforms_ready_class_css-css' href='https://www.issn.org/wp-content/plugins/gravityforms/legacy/css/readyclass.min.css?ver=2.8.14' type='text/css' media='all' /> <link rel='stylesheet' id='gforms_browsers_css-css' href='https://www.issn.org/wp-content/plugins/gravityforms/legacy/css/browsers.min.css?ver=2.8.14' type='text/css' media='all' /> <script type="text/javascript" id="awpqsfscript-js-extra"> /* <![CDATA[ */ var ajax = {"url":"https:\/\/www.issn.org\/wp-admin\/admin-ajax.php"}; /* ]]> */ </script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/ajax-wp-query-search-filter/classes/scripts/awpqsfscript.js?ver=1.0" id="awpqsfscript-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/dist/hooks.min.js?ver=2810c76e705dd1a53b18" id="wp-hooks-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/dist/i18n.min.js?ver=5e580eb46a90c2b997e6" id="wp-i18n-js"></script> <script type="text/javascript" id="wp-i18n-js-after"> /* <![CDATA[ */ wp.i18n.setLocaleData( { 'text direction\u0004ltr': [ 'ltr' ] } ); /* ]]> */ </script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/contact-form-7/includes/swv/js/index.js?ver=5.9.7" id="swv-js"></script> <script type="text/javascript" id="contact-form-7-js-extra"> /* <![CDATA[ */ var wpcf7 = {"api":{"root":"https:\/\/www.issn.org\/wp-json\/","namespace":"contact-form-7\/v1"},"cached":"1"}; /* ]]> */ </script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/contact-form-7/includes/js/index.js?ver=5.9.7" id="contact-form-7-js"></script> <script type="text/javascript" id="wp_mailjet_form_builder_widget-front-script-js-extra"> /* <![CDATA[ */ var mjWidget = {"ajax_url":"https:\/\/www.issn.org\/wp-admin\/admin-ajax.php"}; /* ]]> */ </script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/mailjet-for-wordpress/src/widgetformbuilder/js/front-widget.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="wp_mailjet_form_builder_widget-front-script-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/easy-fancybox/fancybox/1.5.4/jquery.fancybox.min.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="jquery-fancybox-js"></script> <script type="text/javascript" id="jquery-fancybox-js-after"> /* <![CDATA[ */ var fb_timeout, fb_opts={'autoScale':true,'showCloseButton':true,'margin':20,'pixelRatio':'false','centerOnScroll':true,'enableEscapeButton':true,'overlayShow':true,'hideOnOverlayClick':true,'disableCoreLightbox':'true','enableBlockControls':'true','fancybox_openBlockControls':'true' }; if(typeof easy_fancybox_handler==='undefined'){ var easy_fancybox_handler=function(){ jQuery([".nolightbox","a.wp-block-fileesc_html__button","a.pin-it-button","a[href*='pinterest.com\/pin\/create']","a[href*='facebook.com\/share']","a[href*='twitter.com\/share']"].join(',')).addClass('nofancybox'); jQuery('a.fancybox-close').on('click',function(e){e.preventDefault();jQuery.fancybox.close()}); /* IMG */ var unlinkedImageBlocks=jQuery(".wp-block-image > img:not(.nofancybox)"); unlinkedImageBlocks.wrap(function() { var href = jQuery( this ).attr( "src" ); return "<a href='" + href + "'></a>"; }); var fb_IMG_select=jQuery('a[href*=".jpg" i]:not(.nofancybox,li.nofancybox>a),area[href*=".jpg" i]:not(.nofancybox),a[href*=".jpeg" i]:not(.nofancybox,li.nofancybox>a),area[href*=".jpeg" i]:not(.nofancybox),a[href*=".png" i]:not(.nofancybox,li.nofancybox>a),area[href*=".png" i]:not(.nofancybox)'); fb_IMG_select.addClass('fancybox image'); var fb_IMG_sections=jQuery('.gallery,.wp-block-gallery,.tiled-gallery,.wp-block-jetpack-tiled-gallery,.ngg-galleryoverview,.ngg-imagebrowser,.nextgen_pro_blog_gallery,.nextgen_pro_film,.nextgen_pro_horizontal_filmstrip,.ngg-pro-masonry-wrapper,.ngg-pro-mosaic-container,.nextgen_pro_sidescroll,.nextgen_pro_slideshow,.nextgen_pro_thumbnail_grid,.tiled-gallery'); fb_IMG_sections.each(function(){jQuery(this).find(fb_IMG_select).attr('rel','gallery-'+fb_IMG_sections.index(this));}); jQuery('a.fancybox,area.fancybox,.fancybox>a').each(function(){jQuery(this).fancybox(jQuery.extend(true,{},fb_opts,{'transition':'elastic','easingIn':'linear','easingOut':'linear','opacity':false,'hideOnContentClick':false,'titleShow':true,'titlePosition':'over','titleFromAlt':true,'showNavArrows':true,'enableKeyboardNav':true,'cyclic':false,'mouseWheel':'true'}))}); };}; var easy_fancybox_auto=function(){setTimeout(function(){jQuery('a#fancybox-auto,#fancybox-auto>a').first().trigger('click')},1000);}; jQuery(easy_fancybox_handler);jQuery(document).on('post-load',easy_fancybox_handler); jQuery(easy_fancybox_auto); /* ]]> */ </script> <script type="text/javascript" src="https://www.google.com/recaptcha/api.js?render=6Le9f6cUAAAAANc_SYMuveBh2DKj8F7X8JsvXzlZ&amp;ver=3.0" id="google-recaptcha-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/dist/vendor/wp-polyfill.min.js?ver=3.15.0" id="wp-polyfill-js"></script> <script type="text/javascript" id="wpcf7-recaptcha-js-extra"> /* <![CDATA[ */ var wpcf7_recaptcha = {"sitekey":"6Le9f6cUAAAAANc_SYMuveBh2DKj8F7X8JsvXzlZ","actions":{"homepage":"homepage","contactform":"contactform"}}; /* ]]> */ </script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/contact-form-7/modules/recaptcha/index.js?ver=5.9.7" id="wpcf7-recaptcha-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/themes/themeissn/js/verif_form.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="verif-form-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/themes/themeissn/js/waypoints.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="waypoints-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/themes/themeissn/js/waypoints-sticky.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="waypoints-sticky-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/themes/themeissn/js/script-waypoint.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="script-waypoint-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/themes/themeissn/js/script-toggle.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="toggle-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/dist/dom-ready.min.js?ver=f77871ff7694fffea381" id="wp-dom-ready-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-includes/js/dist/a11y.min.js?ver=d90eebea464f6c09bfd5" id="wp-a11y-js"></script> <script type="text/javascript" defer='defer' src="https://www.issn.org/wp-content/plugins/gravityforms/js/jquery.json.min.js?ver=2.8.14" id="gform_json-js"></script> <script type="text/javascript" id="gform_gravityforms-js-extra"> /* <![CDATA[ */ var gform_i18n = {"datepicker":{"days":{"monday":"Mo","tuesday":"Tu","wednesday":"We","thursday":"Th","friday":"Fr","saturday":"Sa","sunday":"Su"},"months":{"january":"January","february":"February","march":"March","april":"April","may":"May","june":"June","july":"July","august":"August","september":"September","october":"October","november":"November","december":"December"},"firstDay":1,"iconText":"Select date"}}; var gf_legacy_multi = []; var gform_gravityforms = {"strings":{"invalid_file_extension":"This type of file is not allowed. Must be one of the following:","delete_file":"Delete this file","in_progress":"in progress","file_exceeds_limit":"File exceeds size limit","illegal_extension":"This type of file is not allowed.","max_reached":"Maximum number of files reached","unknown_error":"There was a problem while saving the file on the server","currently_uploading":"Please wait for the uploading to complete","cancel":"Cancel","cancel_upload":"Cancel this upload","cancelled":"Cancelled"},"vars":{"images_url":"https:\/\/www.issn.org\/wp-content\/plugins\/gravityforms\/images"}}; var gf_global = {"gf_currency_config":{"name":"Euro","symbol_left":"","symbol_right":"&#8364;","symbol_padding":" ","thousand_separator":".","decimal_separator":",","decimals":2,"code":"EUR"},"base_url":"https:\/\/www.issn.org\/wp-content\/plugins\/gravityforms","number_formats":[],"spinnerUrl":"https:\/\/www.issn.org\/wp-content\/plugins\/gravityforms\/images\/spinner.svg","version_hash":"91bfa46fb7d9e4c076d3a4cb1bbf51c2","strings":{"newRowAdded":"New row added.","rowRemoved":"Row removed","formSaved":"The form has been saved. The content contains the link to return and complete the form."}}; /* ]]> */ </script> <script type="text/javascript" defer='defer' src="https://www.issn.org/wp-content/plugins/gravityforms/js/gravityforms.min.js?ver=2.8.14" id="gform_gravityforms-js"></script> <script type="text/javascript" id="gform_conditional_logic-js-extra"> /* <![CDATA[ */ var gf_legacy = {"is_legacy":"1"}; /* ]]> */ </script> <script type="text/javascript" defer='defer' src="https://www.issn.org/wp-content/plugins/gravityforms/js/conditional_logic.min.js?ver=2.8.14" id="gform_conditional_logic-js"></script> <script type="text/javascript" defer='defer' src="https://www.issn.org/wp-content/plugins/gravityforms/js/placeholders.jquery.min.js?ver=2.8.14" id="gform_placeholder-js"></script> <script type="text/javascript" src="https://www.google.com/recaptcha/api.js?hl=en&amp;render=explicit&amp;ver=6a3ad3465064a3df3b5c42a82345fce8" id="no_captcha_recaptcha_api-js"></script> <script type="text/javascript" src="https://www.issn.org/wp-content/plugins/gravity-forms-no-captcha-recaptcha/public/js/gf-no-captcha-recaptcha-public.js?ver=6a3ad3465064a3df3b5c42a82345fce8" id="no_captcha_recaptcha_internal-js"></script> <script type="text/javascript" defer='defer' src="https://www.issn.org/wp-content/plugins/gravityforms/assets/js/dist/utils.min.js?ver=50c7bea9c2320e16728e44ae9fde5f26" id="gform_gravityforms_utils-js"></script> <script type="text/javascript" defer='defer' src="https://www.issn.org/wp-content/plugins/gravityforms/assets/js/dist/vendor-theme.min.js?ver=54e7080aa7a02c83aa61fae430b9d869" id="gform_gravityforms_theme_vendors-js"></script> <script type="text/javascript" id="gform_gravityforms_theme-js-extra"> /* <![CDATA[ */ var gform_theme_config = {"common":{"form":{"honeypot":{"version_hash":"91bfa46fb7d9e4c076d3a4cb1bbf51c2"}}},"hmr_dev":"","public_path":"https:\/\/www.issn.org\/wp-content\/plugins\/gravityforms\/assets\/js\/dist\/"}; /* ]]> */ </script> <script type="text/javascript" defer='defer' src="https://www.issn.org/wp-content/plugins/gravityforms/assets/js/dist/scripts-theme.min.js?ver=bab19fd84843dabc070e73326d787910" id="gform_gravityforms_theme-js"></script> <script type="text/javascript"> /* <![CDATA[ */ gform.initializeOnLoaded( function() { jQuery(document).on('gform_post_render', function(event, formId, currentPage){if(formId == 1) {gf_global["number_formats"][1] = {"1":{"price":false,"value":false},"2":{"price":false,"value":false},"3":{"price":false,"value":false},"4":{"price":false,"value":false},"5":{"price":false,"value":false},"6":{"price":false,"value":false},"8":{"price":false,"value":false},"9":{"price":false,"value":false}};if(window['jQuery']){if(!window['gf_form_conditional_logic'])window['gf_form_conditional_logic'] = new Array();window['gf_form_conditional_logic'][1] = { logic: { 2: {"field":{"actionType":"show","logicType":"all","rules":[{"fieldId":"1","operator":"isnot","value":"Sales Department"}]},"nextButton":null,"section":null},3: {"field":{"actionType":"show","logicType":"all","rules":[{"fieldId":"1","operator":"is","value":"Sales Department"}]},"nextButton":null,"section":null} }, dependents: { 2: [2],3: [3] }, animation: 0, defaults: [], fields: {"1":[2,3],"2":[],"3":[],"4":[],"5":[],"6":[],"8":[],"9":[]} }; if(!window['gf_number_format'])window['gf_number_format'] = 'decimal_dot';jQuery(document).ready(function(){gform.utils.trigger({ event: 'gform/conditionalLogic/init/start', native: false, data: { formId: 1, fields: null, isInit: true } });window['gformInitPriceFields']();gf_apply_rules(1, [2,3], true);jQuery('#gform_wrapper_1').show();jQuery('#gform_wrapper_1 form').css('opacity', '');jQuery(document).trigger('gform_post_conditional_logic', [1, null, true]);gform.utils.trigger({ event: 'gform/conditionalLogic/init/end', native: false, data: { formId: 1, fields: null, isInit: true } });} );} if(typeof Placeholders != 'undefined'){ Placeholders.enable(); }} } );jQuery(document).on('gform_post_conditional_logic', function(event, formId, fields, isInit){} ) } ); /* ]]> */ </script> <script type="text/javascript"> /* <![CDATA[ */ gform.initializeOnLoaded( function() {jQuery(document).trigger("gform_pre_post_render", [{ formId: "1", currentPage: "1", abort: function() { this.preventDefault(); } }]); if (event && event.defaultPrevented) { return; } const gformWrapperDiv = document.getElementById( "gform_wrapper_1" ); if ( gformWrapperDiv ) { const visibilitySpan = document.createElement( "span" ); visibilitySpan.id = "gform_visibility_test_1"; gformWrapperDiv.insertAdjacentElement( "afterend", visibilitySpan ); } const visibilityTestDiv = document.getElementById( "gform_visibility_test_1" ); let postRenderFired = false; function triggerPostRender() { if ( postRenderFired ) { return; } postRenderFired = true; jQuery( document ).trigger( 'gform_post_render', [1, 1] ); gform.utils.trigger( { event: 'gform/postRender', native: false, data: { formId: 1, currentPage: 1 } } ); if ( visibilityTestDiv ) { visibilityTestDiv.parentNode.removeChild( visibilityTestDiv ); } } function debounce( func, wait, immediate ) { var timeout; return function() { var context = this, args = arguments; var later = function() { timeout = null; if ( !immediate ) func.apply( context, args ); }; var callNow = immediate && !timeout; clearTimeout( timeout ); timeout = setTimeout( later, wait ); if ( callNow ) func.apply( context, args ); }; } const debouncedTriggerPostRender = debounce( function() { triggerPostRender(); }, 200 ); if ( visibilityTestDiv && visibilityTestDiv.offsetParent === null ) { const observer = new MutationObserver( ( mutations ) => { mutations.forEach( ( mutation ) => { if ( mutation.type === 'attributes' && visibilityTestDiv.offsetParent !== null ) { debouncedTriggerPostRender(); observer.disconnect(); } }); }); observer.observe( document.body, { attributes: true, childList: false, subtree: true, attributeFilter: [ 'style', 'class' ], }); } else { triggerPostRender(); } } ); /* ]]> */ </script> </body> </html> <!-- Dynamic page generated in 1.976 seconds. --> <!-- Cached page generated by WP-Super-Cache on 2024-11-26 03:32:19 --> <!-- Compression = gzip -->

Pages: 1 2 3 4 5 6 7 8 9 10