  Nuclear shadowing corrections to the structure functions of deep inelastic
scattering of intermediate-mass nuclei are calculated at very low values of
Bjorken x and small values of Q^2 (Q^2<5 GeV^2). The two-component approach
(generalized VMD plus hard pomeron) is used for a description of the underlying
virtual photon - nucleon interaction. The hard component of the nucleon
structure function is calculated in a framework of the colour dipole model with
dipole cross section having Regge-type energy dependence. Numerical results for
nuclear shadowing corrections are compared with available data of E665 and NMC
collaborations.
