@article{10_1090_S0894_0347_07_00564_4,
     author = {Agol, Ian and Storm, Peter and Thurston, William},
     title = {Lower bounds on volumes of hyperbolic {Haken} 3-manifolds},
     journal = {Journal of the American Mathematical Society},
     pages = {1053--1077},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {2007},
     doi = {10.1090/S0894-0347-07-00564-4},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-07-00564-4/}
}