Quantum echoes in classical and semiclassical statistical treatments
  Some quantal systems require only a small part of the full quantum theory for their analysis in classical terms. In such understanding we review some recent literature on semiclassical treatments.   An analysis of it allows one to see that some important quantum features of the harmonic oscillator can indeed be already encountered at the classical or semiclassical statistical levels. 
F. Pennini, A. Plastino
cond-mat.stat-mech