%0 Journal Article
%A V. A. Kazhan
%T The completeness of the system of eigen- and associated functions of an elliptic operator in $R^n$
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1974
%V 29
%N 5
%U http://geodesic.mathdoc.fr/item/RM_1974_29_5_a12/
%G ru
%F RM_1974_29_5_a12