Exact Solutions of Effective-Mass Dirac-Pauli Equation with an   Electromagnetic Field
  The exact bound state solutions of the Dirac-Pauli equation are studied for an appropriate position-dependent mass function by using the Nikiforov-Uvarov method. For a central electric field having a shifted inverse linear term, all two kinds of solutions for bound states are obtained in closed forms. 
Altug Arda, Ramazan Sever
quant-ph