TY - JOUR AU - È. M. Galeev TI - Approximation by Fourier sums of classes of functions with several bounded derivatives JO - Matematičeskie zametki PY - 1978 SP - 197 EP - 212 VL - 23 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1978_23_2_a2/ LA - ru ID - MZM_1978_23_2_a2 ER -