%0 Journal Article
%A I. M. Velikoivanenko
%A I. I. Lyashko
%A G. E. Mistetskiy
%T A general solution of a finite difference problem for the equation ${\rm div(K}\nabla \Psi )=F$ with piecewise constant $\chi $ and with Neumann conditions on a part of the boundary
%J Differencialʹnye uravneniâ
%D 1970
%P 2074-2079
%V 6
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1970_6_11_a15/
%G ru
%F DE_1970_6_11_a15