@article{GDZPPN002284391, title = {Derivations on Commutative Normed Algebras.}, journal = {Mathematische Annalen}, volume = {129}, year = {1955}, pages = {260-264}, zbl = {0067.35101}, url = {http://dml.mathdoc.fr/item/GDZPPN002284391} }
Singer, I.M.; Wermer, J. Derivations on Commutative Normed Algebras.. Mathematische Annalen, Tome 129 (1955) pp. 260-264. http://gdmltest.u-ga.fr/item/GDZPPN002284391/