Neumann problem for elliptic equation in Sobolev power weighted spaces

The Neumann problem for an elliptic equation in a bounded domain Ω ⊂ RN and for external forces with degenerations or singularities relating to the m-dimensional variety M ⊂ δ Ω are considered. The underlying ideas of proof of the existence of the considered problem solution are given for the remaining cases of N - m = 1 and N - m =2.