%0 Journal Article
%A A. M. Olevskii
%T On the extension of a~sequence of functions to a~complete orthonormal system
%J Matematičeskie zametki
%D 1969
%P 737-747
%V 6
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1969_6_6_a9/
%G ru
%F MZM_1969_6_6_a9