NOTE ON “BIFURCATION OF A PREDATOR-PREY MODEL WITH UNDERCROWDING EFFECT”  

作　　者：Yang MingchaoDept. of Math., Zhejiang Univ., Hangzhou 310027, China. 

出　　处：《Applied Mathematics(A Journal of Chinese Universities)》2003年第3期370-372,F003,共4页高校应用数学学报（英文版）（B辑）

摘　　要：Inexistence and existence of limit cycles in a predator-prey model with undercrowding effect are studied.The number of limit cycles obtained by Zheng Weiwei in 2000 is corrected.Inexistence and existence of limit cycles in a predator-prey model with undercrowding effect are studied.The number of limit cycles obtained by Zheng Weiwei in 2000 is corrected.

关 键 词：predator-prey system weak focus limit cycle 

分 类 号：O159[理学—数学]