A new type of conserved quantity of Mei symmetry for Lagrange system
方建会, 丁宁, 王鹏
A new type of conserved quantity of Mei symmetry for Lagrange system
Fang Jian-Hui(方建会), Ding Ning(丁宁), and Wang Peng(王鹏)
中国物理B . 2007, (4): 887 -890 .  DOI: 10.1088/1009-1963/16/4/002