A new class of quasi-exactly solvable potentials with position dependent   mass
  A new class of quasi exactly solvable potentials with a variable mass in the Schroedinger equation is presented. We have derived a general expression for the potentials also including Natanzon confluent potentials. The general solution of the Schroedinger equation is determined and the eigenstates are expressed in terms of the orthogonal polynomials. 
Ramazan Koc, Mehmet Koca and Eser Korcuk