%0 Journal Article %A L. A. Shaginyan %T On the summability to infinity of trigonometric series and series in the Walsh system %J Sbornik. Mathematics %D 1980 %P 427-439 %V 36 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1980_36_3_a8/ %G en %F SM_1980_36_3_a8