@article{GDZPPN001264052,
title = {Optimal properties of contraction semigroups in Banach spaces.},
journal = {Semigroup forum},
volume = {51},
year = {1995},
pages = {247-250},
zbl = {0827.47032},
url = {http://dml.mathdoc.fr/item/GDZPPN001264052}
}
Baillon, J.B.; Guerre-Delabrière, S. Optimal properties of contraction semigroups in Banach spaces.. Semigroup forum, Tome 51 (1995) pp. 247-250. http://gdmltest.u-ga.fr/item/GDZPPN001264052/