TY - JOUR AU - Hsiang, Fu Cheng TI - On a local property of $|(N,p_n)(C,\alpha )|$ summability of Fourier series JO - Portugaliae mathematica PY - 1970 SP - 27 EP - 29 VL - 29 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PORMA_1970__29_1_115105/ LA - en ID - PORMA_1970__29_1_115105 ER -