@article{1183501760,
author = {Hedlund, Gustav A.},
title = {The dynamics of geodesic flows},
journal = {Bull. Amer. Math. Soc.},
volume = {45},
number = {11},
year = {1939},
pages = { 241-260},
language = {en},
url = {http://dml.mathdoc.fr/item/1183501760}
}
Hedlund, Gustav A. The dynamics of geodesic flows. Bull. Amer. Math. Soc., Tome 45 (1939) no. 11, pp. 241-260. http://gdmltest.u-ga.fr/item/1183501760/