@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/