%0 Journal Article
%A G. A. Bessmertnykh
%T Two methods for approximate solution of operator equations in Hilbert space
%J Doklady Akademii Nauk
%D 1960
%P 226-229
%V 131
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1960_131_2_a1/
%G ru
%F DAN_1960_131_2_a1