%0 Journal Article %A Donald Z. Spicer %T A commutativity theorem for Banach algebras %J Colloquium Mathematicum %D 1973 %P 107-108 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-27-1-107-108/ %R 10.4064/cm-27-1-107-108 %G en %F 10_4064_cm_27_1_107_108