First integrals of the discrete nonconservative and nonholonomic systems
张宏彬, 陈立群, 刘荣万
First integrals of the discrete nonconservative and nonholonomic systems
Zhang Hong-Bin (张宏彬), Chen Li-Qun (陈立群), Liu Rong-Wan (刘荣万)
中国物理B . 2005, (2): 238 -243 .  DOI: 10.1088/1009-1963/14/2/003