%0 Journal Article
%A V. M. Filippov
%A A. È. Avakyan
%T The existence of optimal domains in problems with $B$-symmetric, $B$-positive operators
%J Differencialʹnye uravneniâ
%D 1992
%P 2123-2128
%V 28
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1992_28_12_a13/
%G ru
%F DE_1992_28_12_a13