TY - JOUR AU - K. V. Runovskii TI - Multiplicator type operators and approximation of periodic functions of one variable by trigonometric polynomials JO - Sbornik. Mathematics PY - 2021 SP - 234 EP - 264 VL - 212 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2021_212_2_a4/ LA - en ID - SM_2021_212_2_a4 ER -