[1] Comtet A et al 1985 Phys. Lett. B 150 159

Filho E D and Ricotta R M 2000 Phys. Lett. A 269
269

Liang Z et al 2005 Chin. Phys. Lett. 22 2465

[2] Schiff L I 1955 Quantum Mechanics 3rd edn (New York:
McGraw-Hill)

[3] Landau L D and Lifshitz E M 1977 Quantum Mechanics
(Non-Relativistic Theory) 3rd edn (Oxford: Pergamon)

[4] Greene R L, Aldrich C 1976 Phys. Rev. A 14
2363

[5] Bayrak O et al 2006 J. Phys. A: Math. Gen. 39
11521

G\"{on\"{ul.B et al 2000 Phys. Lett. A 275 238

[6] Dong S H and Garc\'{\ia-Ravelo J 2007 Physica
Scripta 75 307

Diaf A et al 2005 Ann. Phys. 317 354

[7] Qiang W C et al 2009 Physica Scripta 79 065011

[8] Bender C M, Boettcher S 1998 Phys. Rev. Lett.
80 5243

Bender C M et al 1999 J. Math. Phys. 40 2201

Bender C M et al 2000 J. Math. Phys. 41 6381

Bender C M, Weniger E J 2001 J. Math. Phys. 42
2167

Bender C M et al 2002 Phys. Lett. A 302 286

[9] Jia C S, Sun Y and Li Y 2002 Phys. Lett. A 305
231

L\'{evai G 2008 Phys. Lett. A 372 6484

Soylu A et al 2008 Chin. Phys. Lett. 25 2754

L\'{evai G 2006 J. Phys. A 39 10161

[10]L\'{evai G 2007 J. Phys. A 40 F273

[11]Eckart C 1930 Phys. Rev 35 1303

Ol\u{gar E et al 2006 Chin. Phys. Lett. 23 539

[12] Nikiforov A F and Uvarov V B 1988 Special Function
of Mathematical Physics (Basel: Birkhauser)

[13]Chen Y et al 1992 Acta Chim. Sin. 50 1163 (in
Chinese)

[14]Lucha W et al 1999 Int. J. Mod. Phys. C 10 607

[15]E\u{grifes H et al 1999 Physica Scripta 60
195

[16]Solombrino L quant-ph/0203101