%0 Journal Article
%A V. A. Lebedev
%T Some spectral properties of Sobolev elliptic problems
%J Doklady Akademii Nauk
%D 1981
%P 1304-1308
%V 258
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_258_6_a4/
%G ru
%F DAN_1981_258_6_a4