Mei symmetry and Mei conserved quantity of Nielsen equations for a non-holonomic system of Chetaev's type with variable mass
杨新芳, 贾利群, 崔金超, 罗绍凯
Mei symmetry and Mei conserved quantity of Nielsen equations for a non-holonomic system of Chetaev's type with variable mass
Yang Xin-Fang(杨新芳), Jia Li-Qun(贾利群), Cui Jin-Chao(崔金超), and Luo Shao-Kai(罗绍凯)
中国物理B . 2010, (3): 30305 -030305 .  DOI: 10.1088/1674-1056/19/3/030305