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@article{MAN_1955__129_160432, author = {I.M. Singer and J. Wermer}, title = {Derivations on {Commutative} {Normed} {Algebras.}}, journal = {Mathematische Annalen}, pages = {260--264}, publisher = {mathdoc}, volume = {129}, year = {1955}, zbl = {0067.35101}, url = {http://geodesic.mathdoc.fr/item/MAN_1955__129_160432/} }
I.M. Singer; J. Wermer. Derivations on Commutative Normed Algebras.. Mathematische Annalen, Tome 129 (1955), pp. 260-264. http://geodesic.mathdoc.fr/item/MAN_1955__129_160432/