@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/