TY - JOUR AU - L. V. Taikov TI - On approximation of periodic functions in the mean JO - Doklady Akademii Nauk PY - 1965 SP - 301 EP - 302 VL - 163 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1965_163_2_a7/ LA - ru ID - DAN_1965_163_2_a7 ER -