%0 Journal Article
%A G. M. Kesel'man
%T The spectral property of a perturbed Sturm--Liouville operator with nonlocal boundary conditions
%J Differencialʹnye uravneniâ
%D 1985
%P 494-499
%V 21
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_3_a15/
%G ru
%F DE_1985_21_3_a15