%0 Journal Article
%A S. D. Shmulevich
%T The distribution of the eigenvalues of the operator of a selfadjoint elliptic boundary value problem in an unbounded domain
%J Doklady Akademii Nauk
%D 1969
%P 959-962
%V 189
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_189_5_a9/
%G ru
%F DAN_1969_189_5_a9