%0 Journal Article %A Bor, Hüseyin %T On the absolute $\varphi $-summability factors of infinite series %J Portugaliae mathematica %D 1988 %P 131-138 %V 45 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1988__45_2_115617/ %G en %F PORMA_1988__45_2_115617