[1] Mancini S. Even and odd nonlinear coherent states [J]. Phys. Lett. A, 1997, 233: 291.

[2] Sivakumar S. Even and odd nonlinear coherent states [J]. Phys. Lett. A, 1998, 250: 257.

[3] Roy B, Roy P. Phase distribution of nonlinear coherent states [J]. J. Opt. B: Quantum Semiclass. Opt., 1999, 1:341.

[4] Sivakumar S. Studies on nonlinear coherent states [J]. J. Opt. B: Quantum Semiclass. Opt., 2000, 2: R61.

[5] Roy B, Roy P. New nonlinear coherent states and some of their nonclassical properties [J]. J. Opt. B: Quantum Semiclass. Opt., 2000, 2: 65.

[6] Roy B, Roy P. Phase properties of a new nonlinear coherent state [J]. J. Opt. B: Quantum Semiclass. Opt., 2000,2: 505.

[9] Yu Guochen, Qu Aicun, Wan Lianshui. The Wehrl's entropy and Shannon's entropy for superposition coherent states [J]. Chinese Journal of Quantum Electronics ((in Chinese).