%0 Journal Article
%A U. Raitums
%T Questions of the existence of a solution in problems of optimal control of leading coefficients of linear elliptic equations
%J Differencialʹnye uravneniâ
%D 1983
%P 1040-1047
%V 19
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1983_19_6_a14/
%G ru
%F DE_1983_19_6_a14