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2. R. B. Clare and D. Strottman,Phys. Rep.141 (1986) 177.
3. L. P. Csernai Introduction to Relativistic Heavy Ion Collisions, John Wiley & Sons, New York, 1994.
4. H. Stöcker and W. Greiner,Phys. Rep.137 (1986) 277.
5. See, for instance, the proceedings Quark Matter '99, eds L. Riccati, M. Masera and E. Vercellini, Elsevier B. V., Amsterdam, Netherlands, 1999.