@article{1077295387,
author = {Xue, Xiaoxi},
title = {On the first Betti numbers of hyperbolic surfaces},
journal = {Duke Math. J.},
volume = {64},
number = {1},
year = {1991},
pages = { 85-110},
language = {en},
url = {http://dml.mathdoc.fr/item/1077295387}
}
Xue, Xiaoxi. On the first Betti numbers of hyperbolic surfaces. Duke Math. J., Tome 64 (1991) no. 1, pp. 85-110. http://gdmltest.u-ga.fr/item/1077295387/