1. Reichenbach, H.: The Direction of Time. University of California Press, Berkley (1956). Dover, New York (1999)
2. Penrose, O., Percival, I.: The direction of time. Proc. Phys. Soc. 79, 605–616 (1962)
3. Balian, R.: From Microphysics to Macrophysics. Springer, Berlin (1992)
4. Gibbs, J.W.: Elementary Principles in Statistical Mechanics. Ox Bow Press, Woodbridge (1902)
5. Jaynes, E.T.: Gibbs vs. Boltzmann entropies. Am. J. Phys. 33, 391 (1965)