JIANG Li-Qun. Existence of Positive Periodic Solutions for Competitive Multi-Species Lotka-Volterra Defference System with Variable Delays[J]. journal6, 2004, 25(3): 36-39.
[1] GAI M J,SHI B,YANG S J.The Existence of Positive Periodic Solution for a Lotka-Volterra Difference System [J].Ann.Differ.Equation,2002,18(4):323-329.[2] LI Y K.On a Periodic Neutral Delay Lotka-Volterra System [J].Nonl.Anal.,2000,39:767-778.[3] LI Y K.Periodic Solutions of a Periodic Delay Predator-Prey System [J].Proc.Amer.Math.Soc.,1999,127:1 331-1 335.[4] GAINS R E,MAWHIN J L.Coincidence Degree and Non-Linear Differential Equations [M].Berlin:Springer Verlag,1977.[5] LI Y K.Periodic Solution for Delay Lotka-Volterra Competition Systems [J].J.Math.Anal.Appl.,2000,246(1):230-244.
