  Here, we discuss QCD predictions on multiplicities in parton and dipole
approaches. The most general treatment is based on the notion of the generating
functions. The generating function G is defined as $G(u,y)=\sum_nu^nP_n(y)$,
where $P_n$ is the probability of the n-particle production at energy denoted
by y, u is an auxiliary variable. The mean multiplicity and higher moments of
the multiplicity distribution $P_n$ are given by the u-derivatives of G at u=1.
