%0 Journal Article
%A V. G. Prikazchikov
%A G. K. Berikelashvili
%T Schemes of increased accuracy for an elliptic equation with a mixed derivative
%J Differencialʹnye uravneniâ
%D 1989
%P 1622-1624
%V 25
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_9_a24/
%G ru
%F DE_1989_25_9_a24