Bound-state solutions of the Dirac-Rosen-Morse potential with spin and pseudospin symmetry⋆ K. J. Oyewumi and C. O. Akoshile Eur. Phys. J. A, 45 3 (2010) 311-318 Published online: 23 July 2010 DOI: 10.1140/epja/i2010-11007-0