TY - JOUR AU - A. Yu. Popov TI - Estimates of the Sums of Sine Series with Monotone Coefficients of Certain Classes JO - Matematičeskie zametki PY - 2003 SP - 877 EP - 888 VL - 74 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2003_74_6_a7/ LA - ru ID - MZM_2003_74_6_a7 ER -