A symmetry and a conserved quantity for the Birkhoff system
梅凤翔, 冮铁强, 解加芳
A symmetry and a conserved quantity for the Birkhoff system
Mei Feng-Xiang(梅凤翔), Gang Tie-Qiang(冮铁强), and Xie Jia-Fang(解加芳)
中国物理B . 2006, (8): 1678 -1681 .  DOI: 10.1088/1009-1963/15/8/006