TY - JOUR AU - M. Sh. Shabozov AU - A. A. Shabozova TI - Sharp inequalities of Jackson-Stechkin type for periodic functions in $L_2$ differentiable in the Weyl sense JO - Trudy Instituta matematiki i mehaniki PY - 2019 SP - 255 EP - 264 VL - 25 IS - 4 UR - http://geodesic.mathdoc.fr/item/TIMM_2019_25_4_a26/ LA - ru ID - TIMM_2019_25_4_a26 ER -