@article{GFA_1992__2_1_58142,
     author = {X. Xue},
     title = {On the {Betti} {Numbers} of a {Hyperbolic} {Manifold.}},
     journal = {Geometric and functional analysis},
     pages = {126--136},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {1992},
     zbl = {0777.11019},
     url = {http://geodesic.mathdoc.fr/item/GFA_1992__2_1_58142/}
}