%0 Journal Article
%A L. A. Muravei
%T The wave equation and the Helmholtz equation in an unbounded domain with a~star-shaped boundary
%J Informatics and Automation
%D 1988
%P 171-180
%V 185
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1988_185_a12/
%G ru
%F TRSPY_1988_185_a12