TY - JOUR AU - E. Chandra TI - Nörlund summability of the derived series of Fourier series JO - Commentationes Mathematicae PY - 1972 SP - 91 EP - 98 VL - 16 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v16i1.5727/ DO - 10.14708/cm.v16i1.5727 LA - pl ID - 10_14708_cm_v16i1_5727 ER -