%0 Journal Article
%A S. L. Edelstein
%T Estimates for and asymptotic behavior of solutions of a two-dimensional boundary value problem for the Helmholtz equation with a coefficient that depends weakly on a variable
%J Differencialʹnye uravneniâ
%D 1990
%P 727-729
%V 26
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1990_26_4_a27/
%G ru
%F DE_1990_26_4_a27