On the Bose-Einstein distribution and Bose condensation
  For a system of identical Bose particles sitting on integer energy levels, we give sharp estimates for the convergence of the sequence of occupation numbers to the Bose-Einstein distribution and for the Bose condensation effect. 
V. P. Maslov (1 and 2) and V. E. Nazaikinskii (2) ((1) Moscow State   University, (2) Institute for Problems in Mechanics, R...