%0 Journal Article %A I.M. Singer %A J. Wermer %T Derivations on Commutative Normed Algebras. %J Mathematische Annalen %D 1955 %P 260-264 %V 129 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1955__129_160432/ %F MAN_1955__129_160432