@article{GDZPPN002336847, title = {Growth functions of surface groups.}, journal = {Mathematische Annalen}, volume = {293}, year = {1992}, pages = {239-258}, zbl = {0734.57001}, url = {http://dml.mathdoc.fr/item/GDZPPN002336847} }
Cannon, J.W.; Wagreich, Ph. Growth functions of surface groups.. Mathematische Annalen, Tome 293 (1992) pp. 239-258. http://gdmltest.u-ga.fr/item/GDZPPN002336847/