@article{JRAM_1994__454_153644,
     author = {Marc Burger and Richard D. Canary},
     title = {A lower bound on ... for geometrically finite hyperbolic n-manifolds.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {37--58},
     publisher = {mathdoc},
     volume = {454},
     year = {1994},
     zbl = {0806.53046},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1994__454_153644/}
}