1. C. J. Thompson, Mathematical Statistical Mechanics, Princeton University Press, New Jersey, 1979.
2. R. Mejdani, II Nuovo Cimento,D13, 2, 131, 1991.
3. K. Nisizima, Prog. Theor. Phys.,85, 39, 1991.
4. K. Tanaka, T. Morita and K. Hiroike, Prog. Theor. Phys.,77, 68, 1987.
5. C. J. Thompson, Classical Equilibrium Statistical Mechanics, Clarendon Press, Oxford, 1988.