%0 Journal Article
%A V. E. Volkov
%T Boundedness of the number of orthogonal solutions of the equation $-u''+q(x)u=\lambda u$
%J Differencialʹnye uravneniâ
%D 1989
%P 1862-1866
%V 25
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_11_a4/
%G ru
%F DE_1989_25_11_a4