@article{GDZPPN001259180,
title = {Some conditions under which a continuous semigroup morphism is strongly differentiable.},
journal = {Semigroup forum},
volume = {36},
year = {1987},
pages = {371-374},
zbl = {0632.22004},
url = {http://dml.mathdoc.fr/item/GDZPPN001259180}
}
Day, J.M.; Weddington, D.D. Some conditions under which a continuous semigroup morphism is strongly differentiable.. Semigroup forum, Tome 36 (1987) pp. 371-374. http://gdmltest.u-ga.fr/item/GDZPPN001259180/