Liu, Qiming; Xu, Rui Periodic solution for a delayed three-species food-chain system with Holling type-II functional response. (English) Zbl 1055.34134 Int. J. Math. Math. Sci. 2003, No. 64, 4057-4070 (2003). The authors study population dynamics taking into account the seasonality of the changing environment and the effect of time delay. They propose sufficient conditions for the existence of positive periodic solutions to the governing system of delay-differential equations. Reviewer: Igor Andrianov (Köln) Cited in 2 Documents MSC: 34K13 Periodic solutions to functional-differential equations 92D25 Population dynamics (general) Keywords:population dynamics; positive periodic solution PDFBibTeX XMLCite \textit{Q. Liu} and \textit{R. Xu}, Int. J. Math. Math. Sci. 2003, No. 64, 4057--4070 (2003; Zbl 1055.34134) Full Text: DOI EuDML