TY - JOUR AU - A. V. Efimov TI - On linear methods of summation of Fourier series of periodic functions JO - Doklady Akademii Nauk PY - 1960 SP - 234 EP - 237 VL - 131 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1960_131_2_a3/ LA - ru ID - DAN_1960_131_2_a3 ER -