1. G. E. Uhlenbeck,Selected Topics in Statistical Mechanics in Statistical Physics (Brandeis Summer Institute, 1962), K. W. Ford, ed., Benjamin, New York, 1963, and the references therein.
2. A. Munster,Statistical Thermodynamics, Vol. 1, Academic,. New York, 1969.
3. J. E. Mayer and M. G. Mayer,Statistical Mechanics, Wiley, New York, 1940.
4. T. D. Lee and C. N. Yang,Phys. Rev. 87:404 (1952).
5. J. Groeneveld,Phys. Lett. 3:50 (1962).