非自治时滞三种群食物链系统正周期解的存在性

赵巍^1,2,谢丛波^1,3

Existence of Positive Periodic Solutions for Non-autonomousThree Species Food-chain System with Delays

ZHAO Wei^1,2, XIE Cong-bo^1,3

大连民族大学学报 . 2015, (1): 53 -57 .