%0 Journal Article
%A N. L. Lebedeva
%T On the density of convergent subsequences of orthogonal series
%J Matematičeskie zametki
%D 1969
%P 419-428
%V 5
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1969_5_4_a3/
%G ru
%F MZM_1969_5_4_a3