<span style="color:#231815;font-family:"font-size:24px;background-color:#FFFFFF;">一类非自治二阶哈密顿系统周期解的存在性和多重性</span>

陈玉松, 常荷洁

Existence and Multiplicity of Periodic Solutions for The Non-autonomous Second-order Hamiltonian Systems

CHEN Yu-song, CHANG He-jie

数学季刊 . 2019, (4): 382 -396 . DOI: 10.13371/j.cnki.chin.q.j.m.2019.04.005