Extensions of a class of similarity solutions of Fokker-Planck equation   with time-dependent coefficients and fixed/moving boundaries
  A general formula in closed form to obtain exact similarity solutions of the Fokker-Planck equation with both time-dependent drift and diffusion coefficients was recently presented by Lin and Ho [ Ann. Phys. \textbf{327}, 386 (2012); J. Math. Phys. \textbf{54}, 041501 (2013)]. In this paper we extend the class of exact solutions by exploiting certain properties of the general formula. 
C.-L. Ho, R. Sasaki
math-ph cond-mat.stat-mech math.AP math.MP nlin.SI quant-ph