8Wu-jun Sun, Zhi-dong Teng, Yuan-hong YuDepartment of Applied Mathematics. Shanghai Jiaotong University, Shanghai 200030, ChinaDepartment of Mathematics, Xinjiang University. Urumqi 830046.Institute of Applied Mathematics, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, China.Permanence in Nonautonomous Predator-prey Lotka-Volterra Systems[J].Acta Mathematicae Applicatae Sinica,2002,18(3):411-422. 被引量:2