%0 Journal Article
%A R. S. Ismagilov
%T Conditions for the semiboundedness and discreteness of the spectrum in the case of one-dimensional differential operators
%J Doklady Akademii Nauk
%D 1961
%P 33-36
%V 140
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a7/
%G ru
%F DAN_1961_140_1_a7