TY - JOUR AU - V. A. Skvortsov TI - Certain estimates of approximation of functions by Cesаro means of Walsh--Fourier series JO - Matematičeskie zametki PY - 1981 SP - 539 EP - 547 VL - 29 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1981_29_4_a6/ LA - ru ID - MZM_1981_29_4_a6 ER -