1. Poincaré, H., Science et Méthode, Flammarion, Paris, 1908, Livre I, Chap. IV.
2. Watanabe, S., Phys. Rev. 27 (1975) 179.
3. See in this respect ‘Discussion on Temporal Asymmetry in Thermodynamics and Cosmology’, O. Costa de Beauregard, reporter, in Proceedings of the International Conference on Thermodynamics held in Cardiff (ed. by P. T. Landsberg), Butterworths, London, 1970.
4. Lewis, G. N., Science 71 (1930) 569.
5. Weiszacker, C. F. von, Ann. Phys. 36 (1939) 275.