@article{GDZPPN001260863,
title = {Nonlinear perturbations of analytical semigroups.},
journal = {Semigroup forum},
volume = {43},
year = {1991},
pages = {127-146},
zbl = {0721.47052},
url = {http://dml.mathdoc.fr/item/GDZPPN001260863}
}
Oharu, S. Nonlinear perturbations of analytical semigroups.. Semigroup forum, Tome 43 (1991) pp. 127-146. http://gdmltest.u-ga.fr/item/GDZPPN001260863/