TY - JOUR AU - R. M. Trigub TI - Linear summation methods and the absolute convergence of Fourier series JO - Izvestiya. Mathematics PY - 1968 SP - 21 EP - 46 VL - 2 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1968_2_1_a1/ LA - en ID - IM2_1968_2_1_a1 ER -