EN
The model for experimentally observed metal-insulator transition induced by magnetic field in amorphous Gd_{x}Si_{1 - x} is presented. The method of calculation is based on the previously created model for amorphous alloys now developed to include magnetic field effects. The model is based on the quantum "2 k_{F}" scattering model theory where the pseudopotentials are replaced by the scattering matrix operators and the Fermi energy is properly determined by the accurate values of the phase shifts. The results agree very well with experimental data.