%0 Journal Article %A K. A. Navasardyan %T On the representation of functions by absolutely convergent series by $\mathcal{H}$-system %J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics %D 2018 %P 49-61 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ISU_2018_18_1_a4/ %G ru %F ISU_2018_18_1_a4