Weak Noether symmetry for nonholonomic systems of non-Chetaev type
解加芳, 冮铁强, 梅凤翔
Weak Noether symmetry for nonholonomic systems of non-Chetaev type
Xie Jia-Fang(解加芳), Gang Tie-Qiang(冮铁强), and Mei Feng-Xiang(梅凤翔)
中国物理B . 2008, (9): 3175 -3179 .  DOI: 10.1088/1674-1056/17/9/003