%0 Journal Article
%A S. L. Edelstein
%T Asymptotic splitting of boundary-value problems for the Helmholtz equation in a~strip with ``permeable'' boundaries
%J Izvestiya. Mathematics 
%D 1997
%P 877-898
%V 61
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1997_61_4_a9/
%G en
%F IM2_1997_61_4_a9