Lie symmetries and conserved quantities of Birkhoff systems with unilateral constraints

张宏彬, 顾书龙

Zhang Hong-Bin (张宏彬), Gu Shu-Long (顾书龙)

中国物理B . 2002, (8): 765 -770 . DOI: 10.1088/1009-1963/11/8/303