Discrete variational principle and the first integrals of the conservative holonomic systems in event space
张宏彬, 陈礼群, 刘荣万
Discrete variational principle and the first integrals of the conservative holonomic systems in event space
Zhang Hong-Bin (张宏彬), Chen Li-Qun (陈礼群), Liu Rong-Wan (刘荣万)
中国物理B . 2005, (5): 888 -892 .  DOI: 10.1088/1009-1963/14/5/005