一类n阶非线性常微分方程周期解的存在性

刘炳文;黄立宏

Existence of Periodic Solutions for Nonlinear nth Order Ordinary Differential Equations

Bing Wen LIU(1), Li Hong HUANG

数学学报 . 2004, (6): 1133 -114 . DOI: 10.12386/A2004sxxb0140