1. L.D. Landau, Izv. Akad. Nauk SSSR17 (1953) 51; in Collected papers of L.D. Landau, ed. D. Ter-Haar, Pergamon, Oxford, 1965, pp. 665-700.
2. J.D. Bjorken, Phys. Rev.D27 (1983) 140.
3. L.P. Csernai, Introduction to Relativistic Heavy Ion Collisions, John Wiley & Sons, 1994.
4. T.S. Biró, Phys. Lett. B474 (2000) 21.
5. T.S. Biró, Phys. Lett.B487 (2000) 133.