1. Fluctuations and non-equilibrium thermodynamics
2. On the Theory of the Brownian Motion II
3. N.G. van Kampen, Stochastic Processes in Physics and Chemistry, North-Holland, Amsterdam, 1992 (Chapter VIII 6).
4. L.D. Landau, E.M. Lifshitz, Fluid Mechanics, Pergamon, London, 1959 (Chapter XVII).