%0 Journal Article
%A V. F. Butuzov
%A V. M. Mamonov
%T A singularly perturbed boundary value problem of elliptic type in the critical case
%J Differencialʹnye uravneniâ
%D 1982
%P 1056-1061
%V 18
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1982_18_6_a15/
%G ru
%F DE_1982_18_6_a15