<?xml version="1.0" encoding="UTF-8"?> <article key="pdf/7389" mdate="2010-01-26 00:00:00"> <author>Kejun Zhuang and Zhaohui Wen</author> <title>Analysis for a Food Chain Model with Crowley&amp;ndash;Martin Functional Response and Time Delay</title> <pages>138 - 141</pages> <year>2010</year> <volume>4</volume> <number>1</number> <journal>International Journal of Mathematical and Computational Sciences</journal> <ee>https://publications.waset.org/pdf/7389</ee> <url>https://publications.waset.org/vol/37</url> <publisher>World Academy of Science, Engineering and Technology</publisher> <abstract>This paper is concerned with a nonautonomous three species food chain model with Crowley&amp;amp;ndash;Martin type functional response and time delay. Using the Mawhins continuation theorem in theory of degree, sufficient conditions for existence of periodic solutions are obtained. </abstract> <index>Open Science Index 37, 2010</index> </article>