1. Bergman, P. G. and Lebowitz, J. L. (1955).Physical Review,99, 578.
2. Blatt, J. M. (1959).Progress in Theoretical Physics 22, 745.
3. Callen, H. B. (1960).Thermodynamics. Wiley.
4. Donnelly, R. F., Herman, R. and Prigogine, I. (1965).Non-Equilibrium Thermodynamics, Variational Techniques and Stability (Proceedings of a Symposium at the University of Chicago, May 17–19, 1965). University of Chicago Press.
5. Farquar, I. E. (1964).Ergodic Theory in Statistical Mechanics. Wiley-Interscience.