%0 Journal Article
%A T. V. Iofina
%T On the Order of Approximation by Riesz Means in Multiplicative Systems in the Classes~$E_X[\varepsilon]$
%J Matematičeskie zametki
%D 2011
%P 508-523
%V 89
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_2011_89_4_a3/
%G ru
%F MZM_2011_89_4_a3