TY - JOUR AU - O. V. Besov TI - Estimate of the approximation of periodic functions by Fourier series JO - Matematičeskie zametki PY - 2006 SP - 784 EP - 787 VL - 79 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2006_79_5_a15/ LA - ru ID - MZM_2006_79_5_a15 ER -