Analysis of the clustering properties in the multiparticle final states pro
duced in central collisions of Pb nuclei with the Ag/Br target at 158 A GeV
is presented. It is mainly focused on investigation of different effects w
hich influence the results of the search for high density phase space regio
ns. A comparison of different clustering procedures is performed with varie
d cuts on the cluster size and on the number of particles per cluster. We a
lso discuss the dependence of the obtained results on the shape of single p
article distributions and on the multiplicity of produced particles.