%0 Journal Article
%T Existence of 2n Positive Periodic Solutions to n-Species Nonautonomous Food Chains with Harvesting Terms
%A Yongkun Li
%A Kaihong Zhao
%J Advances in Difference Equations
%D 2010
%I Springer
%R 10.1155/2010/262461
%X By using Mawhin's continuation theorem of coincidence degree theory and some skills of inequalities, we establish the existence of at least 2n positive periodic solutions for n-species nonautonomous Lotka-Volterra type food chains with harvesting terms. An example is given to illustrate the effectiveness of our results.
%U http://dx.doi.org/10.1155/2010/262461