Applied Mathematics and Mechanics (English Edition) ›› 1988, Vol. 9 ›› Issue (8): 805-811.
金均
Jin Jun
摘要: In this paper, we have made researches on the mathematical models which have three populations of mutual action: and We have obtained the sufficient conditions respectively for the systems (*) and (**) for existence and uniqueness of single positive periodic solutions which are globally asymptotically stable.