%0 Journal Article %A K. V. Runovskii %T Multiplicator type operators and approximation of periodic functions of one variable by trigonometric polynomials %J Sbornik. Mathematics %D 2021 %P 234-264 %V 212 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2021_212_2_a4/ %G en %F SM_2021_212_2_a4