Abstract: We discuss solution of QCD evolution equations and their application to analysis of experimental data about neutrino scattering on nuclei. We consider, in particular, the so-called non-singlet quark distribution function in nucleons in the leading order using the method of numerical inverse Mellin transformation. Parameters specifying the needed boundary conditions are determined by fitting data of the CCFR experiment in Fermilab. In addition to these parameters we determine also the value of the basic QCD parameter Lambda.