%0 Journal Article
%A V. D. Charushnikov
%T On optimal approximate methods for the solution of linear problems
%J Doklady Akademii Nauk
%D 1971
%P 40-43
%V 199
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1971_199_1_a9/
%G ru
%F DAN_1971_199_1_a9