@article{1104247915,
author = {Ruggiero, Rafael O.},
title = {Persistently expansive geodesic flows},
journal = {Comm. Math. Phys.},
volume = {135},
number = {2},
year = {1991},
pages = { 203-215},
language = {en},
url = {http://dml.mathdoc.fr/item/1104247915}
}
Ruggiero, Rafael O. Persistently expansive geodesic flows. Comm. Math. Phys., Tome 135 (1991) no. 2, pp. 203-215. http://gdmltest.u-ga.fr/item/1104247915/