%0 Journal Article
%A O. I. Kuznetsova
%A R. M. Trigub
%T Two-sided estimates of the approximation of functions by Riesz and Marcinkiewicz means
%J Doklady Akademii Nauk
%D 1980
%P 34-36
%V 251
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1980_251_1_a8/
%G ru
%F DAN_1980_251_1_a8