%0 Journal Article
%A V. M. Kurbanov
%T On the Eigenvalue Distribution and a Bessel Property Criterion for Root Functions of a Differential Operator: I
%J Differencialʹnye uravneniâ
%D 2005
%P 464-478
%V 41
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2005_41_4_a3/
%G ru
%F DE_2005_41_4_a3