1. J.D. van der Waals, Zittingsverslag Kon. Akad. v. Wetensch. Amsterdam 1894, p. 133 (see: J. de Boer, Physica, 73, 1 (1974))
2. I.R. Krichevskii, Acta, Phys. Chim. USSR, 12, 480 (1940)
3. J.A. Schouten, Thesis, Amsterdam 1969; and N.J. Trappeniers and J.A. Schouten, Phys. Letters, 27 A, 340 (1968)
4. I. Prigogine, ‘Molecular theory of solutions’, North Holland Press, Amsterdam, 1957
5. P.J. Flory, J. Am. Chem. Soc., 86, 3507, 3515 (1964)