1. See,e.g.,J. von Neumann:Mathematical Foundations of Quantum Mechanics, English translation (Princeton University Press, Princeton, N. J., 1955);E. C. Kemble Phys. Rev.,56, 1013, 1146 (1939);U. Fano:Rev. Mod. Phys.,29, 74 (1957);E. T. Jaynes:Phys. Rev.,106, 620 (1957);108, 171 (1957);W. Band:Am. J. Phys.,26, 440, 540 (1958);E. C. G. Sudarshan, P. M. Mathews andJ. Ran:Phys. Rev.,121, 920 (1961);R. Jancel:Foundations of Classical and Quantum Statistical Mechanics, (Pergamon Press, Oxford, 1969);J. Mehra andE. C. G. Sudarshan:Nuovo Cimento B,11, 215 (1972).
2. A. Wehrl:Rev. Mod. Phys.,50, 221 (1978).
3. G. N. Hatsopoulos andE. P. Gyftopoulos:Found. Phys.,6, 15, 127, 439, 561, (1976).
4. A recent review of these attempts is given byJ. L. Park andR. F. Simmons, jr:The knots of thermodynamics, inOld and New Questions in Physics, Cosmology, Philosophy and Theoretical Biology: Essays in Honor of Wolfgang Jourgrau, edited byA. van der Merwe (Plenum Press, New York, N. Y., 1983). See alsoJ. L. Park andW. Band:Found. Phys.,7, 813 (1977).
5. R. F. Simmons, jr. andJ. L. Park:Found. Phys.,11, 297 (1981).