1. For a recent review see the Proceedings of Third International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions. Nucl. Phys.418A, 3c (1984)
2. V.D. Aksinenko et al.: Nucl. Phys.324A, 266 (1979); Nucl. Phys.348A, 518 (1980); A.Kh. Abdurakhimov et al.: Nucl. Phys.362A, 376 (1981); A.Kh. Anikina et al.: Z. Phys. C ? Particles and Fields9, 105 (1981); R. Szwed in: Proc. 5th High Energy Heavy Ion Study, LBL, Berkeley
3. R.J. Glauber in: Lectures in theoretical physics, Eds. W.E. Brittin, L.G. Dunhan. New York: Interscience 1959
4. C. Pajares, A.V. Ramallo: Phys. Rev.D31, 2800 (1985)
5. A. Capella, U. Sukhatme, C.I. Tan, J. Tran Thanh Van Phys. Lett.81B, 62 (1979); A. Capella, U. Sukhatme, J. Tran Thanh Van: Z. Phys. C ? Particles and Fields3, 329 (1980); U. Sukhatme: Phys. Rev. Lett.45, 5 (1980)