G. P. Flessas, 1979, Phys. Lett., 72A, 289, 10.1016/0375-9601(79)90471-7
G. P. Flessas, 1980, Phys. Lett., 78A, 19, 10.1016/0375-9601(80)90794-X
G. P. Flessas, 1981, Phys. Lett., 81A, 17, 10.1016/0375-9601(81)90292-9
1981, J. Phys. A, 14, L209, 10.1088/0305-4470/14/6/001
E. Magyari, 1981, Phys. Lett., 81A, 116, 10.1016/0375-9601(81)90037-2
G. P. Flessas, 1983, J. Phys. A, 16, 85, 10.1088/0305-4470/16/1/016
P. G. L. Leach, 1984, J. Math. Phys., 25, 974
P. G. L. Leach, 1985, Physica D, 17, 331, 10.1016/0167-2789(85)90216-7
A. V. Turbiner, 1988, Commun. Math. Phys., 118, 467, 10.1007/BF01466727
A. de Souza Dutra, 1988, Phys. Lett. A, 131, 319, 10.1016/0375-9601(88)90780-3
R. K. Roychoudhury, 1988, J. Phys. A, 21, 13, 10.1088/0305-4470/21/13/025
M. A. Shiffman, 1989, Int. J. Mod. Phys. A, 4, 2897, 10.1142/S0217751X89001151
M. A. Shiffman, 1989, Int. J. Mod. Phys. A, 4, 3305, 10.1142/S0217751X89001345
P. G. L. Leach, 1989, J. Math. Phys., 30, 1525, 10.1063/1.528285
P. Roy, 1989, Phys. Lett. A, 139, 1427
R. S. Kaushal, 1989, Phys. Lett. A, 142, 57, 10.1016/0375-9601(89)90158-8
D. P. Jatkar, 1989, Phys. Lett. A, 142, 200, 10.1016/0375-9601(89)90313-7
R. Adhikari, 1989, Phys. Lett. A, 141, 1, 10.1016/0375-9601(89)90433-7
R. Roychoudhury, 1990, Phys. Rev. A, 42, 184, 10.1103/PhysRevA.42.184
S. K. Bose, 1990, Phys. Lett. A, 147, 85, 10.1016/0375-9601(90)90872-L
H. H. Aly, 1990, Phys. Lett. A, 145, 299, 10.1016/0375-9601(90)90938-K
T. I. Maglaperidze, 1990, Mod. Phys. Lett. A, 5, 1883, 10.1142/S0217732390002134
A. G. Ushveridze, 1990, Mod. Phys. Lett. A, 5, 1891, 10.1142/S0217732390002146
S. C. Chhajlany, 1990, Phys. Rev. A, 42, 3111, 10.1103/PhysRevA.42.3111
S. "Oz c celik, 1991, Phys. Lett. A, 152, 145, 10.1016/0375-9601(91)91081-N
L. D. Salem, 1991, Phys. Rev. A, 43, 1169, 10.1103/PhysRevA.43.1169
A. de Souza Dutra, 1991, Phys. Rev. A, 44, 4721, 10.1103/PhysRevA.44.4721
D. K. Roy, 1986, Quantum Mechanical Tunnelling and its Applications, 10.1142/0217
L. A. MacColl, 1932, Phys. Rev., 40, 261, 10.1103/PhysRev.40.621
D. M. Dennison, 1932, Phys. Rev., 41, 261, 10.1103/PhysRev.41.261
F. T. Wall, 1937, J. Chem. Phys., 5, 314, 10.1063/1.1750030
R. L. Somorjai, 1962, J. Chem. Phys., 36, 1980, 10.1063/1.1732814
C. Quigg, 1979, Phys. Rep., 56, 167, 10.1016/0370-1573(79)90095-4
G. Wunner, 1986, Phys. Rev. Lett., 57, 3161, 10.1103/PhysRevLett.57.3261
C. M. Bender, 1993, Phys. Lett. A, 173, 442, 10.1016/0375-9601(93)90153-Q
R. K. Panday, 1989, J. Phys. A, 22, 459, 10.1088/0305-4470/22/5/012
F. M. Fernández, 1991, Rev. A, 44, 3336, 10.1103/PhysRevA.44.3336
