%0 Journal Article
%A U. Raitums
%T The extension of extremal problems connected with a linear elliptic equation
%J Doklady Akademii Nauk
%D 1978
%P 281-283
%V 243
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1978_243_2_a0/
%G ru
%F DAN_1978_243_2_a0