1. See e.g. the Proceedings of Quark Matter 99 published in Nucl. Phys. A661
2. CERES Collaboration: G Agakichiev et al, Europhys. J. C4, 231 (1998)
3. CERES Collaboration: G Agakichiev et al, Europhys. J. C4, 249 (1998)
4. CERES Collaboration: G Agakichiev et al, Phys. Rev. Lett. 75, 1272 (1995)
5. CERES Collaboration: I Ravinovich, Nucl. Phys. A638, 159c (1998)