@article{GDZPPN001261746,
title = {Analyticity of the propagators of second order linear differential equations in Banach spaces.},
journal = {Semigroup forum},
volume = {44},
year = {1992},
pages = {356-363},
zbl = {0782.47041},
url = {http://dml.mathdoc.fr/item/GDZPPN001261746}
}
Xio, T.; Liang, J. Analyticity of the propagators of second order linear differential equations in Banach spaces.. Semigroup forum, Tome 44 (1992) pp. 356-363. http://gdmltest.u-ga.fr/item/GDZPPN001261746/