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@article{IM_1987__88_143441, author = {S.P. Plotnick and W.J. Floyd}, title = {Growth functions on {Fuchsian} groups and the {Euler} characteristic.}, journal = {Inventiones mathematicae}, pages = {1--30}, publisher = {mathdoc}, volume = {88}, year = {1987}, zbl = {0608.20036}, url = {http://geodesic.mathdoc.fr/item/IM_1987__88_143441/} }
S.P. Plotnick; W.J. Floyd. Growth functions on Fuchsian groups and the Euler characteristic.. Inventiones mathematicae, Tome 88 (1987), pp. 1-30. http://geodesic.mathdoc.fr/item/IM_1987__88_143441/