2p和2q阶联立微分方程组的正解性

杨瑞兰;张炎彪

Positive Solutions for 2p and 2q Order Simultaneous Nonlinear Ordinary Differential System

YANG Ruilan;ZHANG Yanbiao

系统科学与数学 . 2009, (12): 1571 -1578 . DOI: 10.12341/jssms08486