%0 Journal Article
%A I. E. Kaporin
%T Preconditioning of the method of conjugate gradients for solving discrete analogues of differential problems
%J Differencialʹnye uravneniâ
%D 1990
%P 1225-1236
%V 26
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1990_26_7_a14/
%G ru
%F DE_1990_26_7_a14