Six pages describing a sophomore-level (and, worse, already many
times published) trivial exercise based on the exponential
approximation (11) of the centrifugal term in the Klein-Gordon ODE
(9). The carboncopying publication strategy proves, alas,
unbelievably productive in our ``publish or perish" world controlled
by increasingly irresponsible referees of J. Math. Phys.

MR2759472 Bayrak, O.; Soylu, A.; Boztosun, I. The relativistic
treatment of spin-0 particles under the rotating Morse oscillator.
J. Math. Phys. 51 (2010), no. 11, 112301, 6 pp. 81Qxx