%0 Journal Article
%A A. V. Kozak
%T A local principle in the theory of projection methods
%J Doklady Akademii Nauk
%D 1973
%P 1287-1289
%V 212
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_212_6_a4/
%G ru
%F DAN_1973_212_6_a4