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Zbl 1079.34515
Huo, Hai-Feng
Periodic solutions for a semi-ratio-dependent predator--prey system with functional responses. (English)
[J] Appl. Math. Lett. 18, No. 3, 313-320 (2005). ISSN 0893-9659

The author considers a class of nonautonomous semi-ratio-dependent predator-prey systems with functional response. By using the coincidence degree theory, he obtains sufficient conditions for the existence of a positive periodic solution.
[Chen Lan Sun (Beijing)]
MSC 2000:
*34C25 Periodic solutions of ODE
92D25 Population dynamics

Keywords: nonautonomous; predator-prey system; periodic solution; coincidence degree theory

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