  Entropy, dimensions and other multifractal characteristics of multiplicity
distributions of relativistic charged hadrons produced in ion-ion collisions at
SPS energies are investigated. The analysis of the experimental data is carried
out in terms of phase space bin-size dependence of multiplicity distributions
following the Takagi's approach. Yet another method is also followed to study
the multifractality which, is not related to the bin-width and (or) the
detector resolution, rather involves multiplicity distribution of charged
particles in full phase space in terms of information entropy and its
generalization, R\'{e}nyi's order-q information entropy. The findings reveal
the presence of multifractal structure-- a remarkable property of the
fluctuations. Nearly constant values of multifractal specific heat, 'c'
estimated by the two different methods of analysis followed indicate that the
parameter 'c' may be used as a universal characteristic of the particle
production in high energy collisions. The results obtained from the analysis of
the experimental data agree well with the predictions of Monte Carlo model
AMPT.
