Normal ordering and antinormal ordering of the operator ( fQ+gP) n and some of their applications
孟祥国, 王继锁, 梁宝龙
Normal ordering and antinormal ordering of the operator $(fQ+gP)^n$ and some of their applications
Meng Xiang-Guo(孟祥国), Wang Ji-Suo(王继锁), and Liang Bao-Long(梁宝龙)
中国物理B . 2009, (4): 1534 -1541 .  DOI: 10.1088/1674-1056/18/4/040