%0 Journal Article
%A I. V. Suveyka
%T The exterior boundary value problem for an operator which decomposes into Helmholtz operators
%J Differencialʹnye uravneniâ
%D 1968
%P 1667-1675
%V 4
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1968_4_9_a12/
%G ru
%F DE_1968_4_9_a12