@article{CRMATH_2003__336_6_487_0,
     author = {Sambusetti, Andrea},
     title = {Growth tightness of negatively curved manifolds},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {487--491},
     publisher = {Elsevier},
     volume = {336},
     number = {6},
     year = {2003},
     doi = {10.1016/S1631-073X(03)00086-4},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/S1631-073X(03)00086-4/}
}