On $qp$-Deformations in Statistical Mechanics of Bosons in D Dimensions
  The Bose distribution for a gas of nonrelativistic free bosons is derived in the framework of $qp$-deformed second quantization. Some thermodynamical functions for such a system in D dimensions are derived. Bose-Einstein condensation is discussed in terms of the parameters q and p as well as a parameter $\nu_0'$ which characterizes the representation space of the oscillator algebra. 
M.R. Kibler, J. Meyer and M. Daoud