%0 Journal Article
%A V. F. Butuzov
%T The angular boundary layer in mixed singularly perturbed problems for hyperbolic equations
%J Sbornik. Mathematics
%D 1977
%P 403-425
%V 33
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1977_33_3_a5/
%G en
%F SM_1977_33_3_a5