Physics of the quark-gluon plasma and relativistic heavy-ion collisions
: proceedings of the International School on Physics of the Quark-Gluon Plasma (June 3 - 6, 1997, Hiroshima) and the YITP Workshop on Physics of Relativisitc Heavy-Ion Collisions (June 9 - 11, 1997, YITP, Kyoto)