An enthusiastic report on an N plus first rediscovery of the very
old and very elementary idea of an approximative simulation of the
presence of a centrifugal term in Schroedinger equation by means of
an ad hoc modification of parameters in some exactly solvable
potential (cf., e.g., an extensive account of this trick in S.
Fluegge, Practical Quantum Mechanics I, Springer, Berlin, 1971, pp.
186 - 1890 where also a reference to the author's 1967 paper is also
provided).


MR2515606 Qiang, Wen-Chao; Li, Kai; Chen, Wen-Li New bound and
scattering state solutions of the Manning-Rosen potential with the
centrifugal term. J. Phys. A 42 (2009), no. 20, 205306, 13 pp. 81Q05
(81U15)