Nonexistence of ultra-subharmonic periodic orbits in periodically forced differential equation

高经武, 李庆士

Gao Jing-Wu (高经武), Li Qing-Shi (李庆士)

中国物理B . 2005, (7): 1365 -1369 . DOI: 10.1088/1009-1963/14/7/017