  The improved two-scale model with symmetric Lund distribution function is
used to perform the fit to the semi-inclusive deep-inelastic scattering (SIDIS)
data on nuclear targets of HERMES experiment at DESY. The ratio of hadron
multiplicity on nuclear target to the deuterium one is chosen as observable, as
usually. Some peculiarities of the fit are discussed. The two-parameter's fit
gives satisfactory agreement with the data. The results of the present and
previous fits are compared.

High Energy Physics - Phenomenology;Nuclear Theory