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2. I. Oppenheim, K.E. Shuler, G.H. Weiss, Stochastic Processes in Chemical Physics: The Master Equation, MIT, Cambridge, MA, 1977.
3. H. Risken, The Fokker-Planck Equation, Springer, Berlin, 1984.
4. Nonlinear Brownian motion
5. A General Solution of the Fokker-Planck Equation