%0 Journal Article
%A B. T. Bilalov
%T Necessary and sufficient condition for the completeness of a system of functions
%J Differencialʹnye uravneniâ
%D 1991
%P 158-161
%V 27
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1991_27_1_a18/
%G ru
%F DE_1991_27_1_a18