%0 Journal Article
%A V. F. Butuzov
%T An angular boundary layer in singularly perturbed problems with partial derivatives
%J Differencialʹnye uravneniâ
%D 1979
%P 1848-1862
%V 15
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1979_15_10_a12/
%G ru
%F DE_1979_15_10_a12