%0 Journal Article
%A I. V. Aliev
%A S. Ya. Yakubov
%T Second-order differential-operator equations with discrete spectrum on the whole axis
%J Matematičeskie zametki
%D 1981
%P 187-196
%V 30
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1981_30_2_a4/
%G ru
%F MZM_1981_30_2_a4