%0 Journal Article
%A É. A. Polyanskii
%T Approximation of the solution of the Helmholtz equation by the solution of an equation of Schr\"odinger type
%J Differencialʹnye uravneniâ
%D 1984
%P 695-706
%V 20
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1984_20_4_a16/
%G ru
%F DE_1984_20_4_a16