%0 Journal Article %A A. F. Kleiner %T Unbounded multipliers and summation of series %J Colloquium Mathematicum %D 1973 %P 287-289 %V 28 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-28-2-287-289/ %R 10.4064/cm-28-2-287-289 %G en %F 10_4064_cm_28_2_287_289