%0 Journal Article %A G.G. Lorentz %A M.S. Macphail %T Direct theorems on methods of summability III: absolute summabilty functions. %J Mathematische Zeitschrift %D 1953 %P 231-246 %V 59 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1953__59_169385/ %F MZ_1953__59_169385