%0 Journal Article
%A I. A. Danilova
%T Exterior boundary value problems for the Helmholtz equation
%J Informatics and Automation
%D 1968
%P 58-72
%V 103
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1968_103_a4/
%G ru
%F TRSPY_1968_103_a4