Symmetry of Lagrangians of nonholonomic systems of non-Chetaev's type
吴惠彬, 梅凤翔
Symmetry of Lagrangians of nonholonomic systems of non-Chetaev's type
Wu Hui-Bin(吴惠彬) and Mei Feng-Xiang(梅凤翔)
中国物理B . 2010, (3): 30303 -030303 .  DOI: 10.1088/1674-1056/19/3/030303