@article{CRMATH_2003__336_3_257_0,
     author = {G\'erard Besson and Gilles Courtois and Sylvestre Gallot},
     title = {Hyperbolic manifolds, amalgamated products and critical exponents},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {257--261},
     publisher = {Elsevier},
     volume = {336},
     number = {3},
     year = {2003},
     doi = {10.1016/S1631-073X(02)00019-5},
     language = {en},
}