1. R. C. Hendricks, R. J. Simoneau, and R. V. Smith, forthcoming NASA TN, (NASA TMX-52612).
2. J. O. Hirschfelder, C. F. Curtiss, and R. B. Bird, Molecular Theory of Gases and Liquids, John Wiley and Sons, New York (1954).
3. J. S. Rowlinson, Liquids and Liquid Mixtures, Butterworths Scientific Publ. (1959).
4. E. F. Hammel, in: Pure and Applied Cryogenics, Vol. 5, Pergamon Press (1966), p. 11.
5. B. Widom, Science, 157(3787): 375 (1967).