@article{1084479318, author = {Hubert, Pascal and Schmidt. Thomas A.}, title = {Infinitely generated Veech groups}, journal = {Duke Math. J.}, volume = {121}, number = {1}, year = {2004}, pages = { 49-69}, language = {en}, url = {http://dml.mathdoc.fr/item/1084479318} }
Hubert, Pascal; Schmidt. Thomas A. Infinitely generated Veech groups. Duke Math. J., Tome 121 (2004) no. 1, pp. 49-69. http://gdmltest.u-ga.fr/item/1084479318/