@article{JEMS_2016_18_5_a1,
     author = {David Borthwick and Colin Guillarmou},
     title = {Upper bounds for the number of resonances on geometrically finite hyperbolic manifolds},
     journal = {Journal of the European Mathematical Society},
     pages = {997--1041},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {2016},
     doi = {10.4171/jems/607},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/607/}
}