Thermal Equilibration and Expansion in Nucleus-Nucleus Collision at the   AGS
  The rather complete data set of hadron yields from central Si + A collisions at the Brookhaven AGS is used to test whether the system at freeze-out is in thermal and hadro-chemical equilibrium. Rapidity and transverse momentum distributions are discussed with regards to the information they provide on hydrodynamic flow. 
P. Braun-Munzinger, J. Stachel, J.P. Wessels and N. Xu