@article{MOMA_1976__82_177788,
     author = {S.J. Patterson},
     title = {The {Exponent} of {Convergence} of {Poincar\'e} {Series.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {297--316},
     publisher = {mathdoc},
     volume = {82},
     year = {1976},
     zbl = {0349.30012},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1976__82_177788/}
}