@article{1102976839, author = {Stampfli, Joseph G.}, title = {The norm of a derivation.}, journal = {Pacific J. Math.}, volume = {35}, number = {3}, year = {1970}, pages = { 737-747}, language = {en}, url = {http://dml.mathdoc.fr/item/1102976839} }
Stampfli, Joseph G. The norm of a derivation.. Pacific J. Math., Tome 35 (1970) no. 3, pp. 737-747. http://gdmltest.u-ga.fr/item/1102976839/