%0 Journal Article
%A N. A. Davydov
%T A~sufficient condition for the summability of a~series by the $(\varphi_n)$-method
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1964
%V 19
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1964_19_5_a3/
%G ru
%F RM_1964_19_5_a3