@article{1195516068,
author = {Watanabe, Michiaki},
title = {A perturbation theory for abstract evolution equations of second order},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {58},
number = {5},
year = {1982},
pages = { 143-146},
language = {en},
url = {http://dml.mathdoc.fr/item/1195516068}
}
Watanabe, Michiaki. A perturbation theory for abstract evolution equations of second order. Proc. Japan Acad. Ser. A Math. Sci., Tome 58 (1982) no. 5, pp. 143-146. http://gdmltest.u-ga.fr/item/1195516068/