Method of calculating the moments of the structure functions of deep inelastic scattering in quantum chromodynamics

The method of unicalities is applied to the calculation of moments of structure functions of deeply inelastic scattering in QCD. Examples are given of calculating many-loop diagrams depending on two momenta when the square of one of them is equal to zero. The method can also be used in other theories based on the light cone expansion as well as for calculating propagator type diagrams with many momenta on their lines.