%0 Journal Article
%A V. Sh. Tsagareishvili
%T General orthonormal systems and absolute convergence
%J Izvestiya. Mathematics 
%D 2020
%P 816-828
%V 84
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_2020_84_4_a9/
%G en
%F IM2_2020_84_4_a9