1. Lectures on the Theory of Gases;Boltzmann,1964
2. P. Ehrenfest, T. Ehrenfest, Encyklopädie der Mathematischen Wissenschaften, Bd. IV 2, II, H. 6 (1911) [Reprinted in: P. Ehrenfest, Collected Scientific Papers, North-Holland, Amsterdam, 1959.
3. E.W. Montroll, J.L. Lebowitz (Eds.), Studies in Statistical Mechanics, Vol. 9, North-Holland, Amsterdam, 1981.
4. Increase-in-entropy law
5. Ehrenfest’s argument extended to a formalism of nonequilibrium thermodynamics