@article{1195521888, author = {Miyadera, Isao}, title = {A perturbation theorem for contraction semi-groups}, journal = {Proc. Japan Acad.}, volume = {42}, number = {5}, year = {1966}, pages = { 755-758}, language = {en}, url = {http://dml.mathdoc.fr/item/1195521888} }
Miyadera, Isao. A perturbation theorem for contraction semi-groups. Proc. Japan Acad., Tome 42 (1966) no. 5, pp. 755-758. http://gdmltest.u-ga.fr/item/1195521888/