Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1991__48_4_115763, author = {Freire, Nuno C.}, title = {On the exponential of a bounded linear operator in a {L(E,E)} algebra}, journal = {Portugaliae mathematica}, pages = {363--382}, publisher = {mathdoc}, volume = {48}, number = {4}, year = {1991}, mrnumber = {1147604}, zbl = {0776.46008}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1991__48_4_115763/} }
Freire, Nuno C. On the exponential of a bounded linear operator in a L(E,E) algebra. Portugaliae mathematica, Tome 48 (1991) no. 4, pp. 363-382. http://geodesic.mathdoc.fr/item/PORMA_1991__48_4_115763/