Analysis for a Food Chain Model with Crowley–Martin Functional Response and Time Delay

This paper is concerned with a nonautonomous three species food chain model with Crowley–Martin type functional response and time delay. Using the Mawhin-s continuation theorem in theory of degree, sufficient conditions for existence of periodic solutions are obtained.

• Kejun Zhuang
• Zhaohui Wen

• Periodic solutions
• coincidence degree
• food chain model
• Crowley–Martin functional response.

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