TY - JOUR AU - S. B. Topuriya TI - Abel summability of a differential Fourier series JO - Doklady Akademii Nauk PY - 1973 SP - 569 EP - 572 VL - 209 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1973_209_3_a13/ LA - ru ID - DAN_1973_209_3_a13 ER -