  An iterative procedure is developed with the aim of constructing homogeneity
rules for the distribution P(rho,delta) of the particle density rho at
resolution scale delta. A single iteration step consists of a change in the
normalization point of P(rho,delta) followed by a rescaling. Similar
transformation rule is introduced for density fluctuations contaminated by
Poisson noise. Application of the iterative procedure is given for the
Ginzburg-Landau description of phase-transition from the quark-gluon plasma and
for random cascading models.
