@article{3273,
author = {Freire, Nuno C.},
title = {On the exponential of a bounded linear operator in a L(E,E) algebra},
journal = {Portugaliae mathematica},
volume = {48},
year = {1991},
pages = {363-382},
zbl = {0776.46008},
mrnumber = {1147604},
language = {en},
url = {http://dml.mathdoc.fr/item/3273}
}
Freire, Nuno C. On the exponential of a bounded linear operator in a L(E,E) algebra. Portugaliae mathematica, Tome 48 (1991) pp. 363-382. http://gdmltest.u-ga.fr/item/3273/