一类有脉冲一阶泛函微分方程的正周期解

文香丹, 苑成军, 徐艳华

Positive Periodic Solutions to a Kind of Delay FunctionalDifferential Equations with Impulse Effects

WEN Xiangdan, YUAN Chengjun, XU Yanhua

吉林大学学报(理学版) . 2008, (06): 1073 -1080 .