%0 Journal Article %A Z. U. Ahmad %T Absolute Nörlund summability factors of power series and Fourier series %J Annales Polonici Mathematici %D 1972 %P 9-20 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-27-1-9-20/ %R 10.4064/ap-27-1-9-20 %G de %F 10_4064_ap_27_1_9_20