Integrating factors and conservation theorems of constrained Birkhoffian systems

乔永芬, 赵淑红, 李仁杰

Qiao Yong-Fen(乔永芬), Zhao Shu-Hong(赵淑红), and Li Ren-Jie(李仁杰)

中国物理B . 2006, (12): 2777 -2781 . DOI: 10.1088/1009-1963/15/12/002