%0 Journal Article
%A A. S. Demidov
%T Elliptic pseudodifferential boundary value problems with a~small parameter in the coefficient of the leading operator
%J Sbornik. Mathematics
%D 1973
%P 439-463
%V 20
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1973_20_3_a7/
%G en
%F SM_1973_20_3_a7