%0 Journal Article
%A M. Otelbaev
%T A criterion for discreteness of the spectrum for a certain degenerate operator, and certain imbedding theorems
%J Differencialʹnye uravneniâ
%D 1977
%P 111-120
%V 13
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_1_a15/
%G ru
%F DE_1977_13_1_a15