New non-Noether conserved quantities of mechanical system in phase space
闫向宏, 方建会
New non-Noether conserved quantities of mechanical system in phase space
Yan Xiang-Hong (闫向宏), Fang Jian-Hui (方建会)
中国物理B . 2006, (10): 2197 -2201 .  DOI: 10.1088/1009-1963/15/10/002