Measurement of negative particle multiplicity in S-Pb collisions at 200   GeV/c per nucleon with the NA36 TPC
  A high statistics study of the negative multiplicity distribution from S-Pb collisions at 200 GeV/c per nucleon is presented. The NA36 TPC was used to detect charged particles; corrections are based upon the maximum entropy method. 
NA36 Collaboration, E. Andersen, et al