@article{CRMATH_2003__336_5_391_0,
     author = {Ollivier, Yann},
     title = {Critical densities for random quotients of hyperbolic groups},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {391--394},
     publisher = {Elsevier},
     volume = {336},
     number = {5},
     year = {2003},
     doi = {10.1016/S1631-073X(03)00084-0},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/S1631-073X(03)00084-0/}
}