The energy eigenvalues of the Kratzer potential in the presence of a magnetic field M. Aygun, O. Bayrak, I. Boztosun and Y. Sahin Eur. Phys. J. D, 66 2 (2012) 35 Published online: 16 February 2012 DOI: 10.1140/epjd/e2011-20319-5