%0 Journal Article
%A N. Yu. Kapustin
%T $L_2$-solvability of boundary value problems for equations of mixed type
%J Differencialʹnye uravneniâ
%D 1989
%P 50-59
%V 25
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_1_a6/
%G ru
%F DE_1989_25_1_a6