1. Anderson, J. L.: 1967,Principles of Relativity Physics, Academic Press, New York.
2. Banai, M.: 1985,Found. Phys. 15, 1203.
3. Barrow, J. D.: 1983, in V. M. Canuto and B. G. Elmegreen (eds.),Fundamentals of Cosmic Physics, Gordon and Breach, New York, p. 83.
4. Bekenstein, J. D.: 1973,Phys. Rev. D7, 2333.
5. Callen, H. B.: 1960,Thermodynamics, John Wiley, New York.