Free subgroups of the parametrized modular group
Revista colombiana de matematicas, Tome 49 (2015) no. 2, pp. 269-279.

Voir la notice de l'article provenant de la source Sociedad Colombiana de Matemáticas

@article{RCM_2015_49_2_a3,
     author = {Christian Pommerenke and Margarita Toro},
     title = {Free subgroups of the parametrized modular group},
     journal = {Revista colombiana de matematicas},
     pages = {269--279},
     publisher = {mathdoc},
     volume = {49},
     number = {2},
     year = {2015},
     url = {http://geodesic.mathdoc.fr/item/RCM_2015_49_2_a3/}
}
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Christian Pommerenke; Margarita Toro. Free subgroups of the parametrized modular group. Revista colombiana de matematicas, Tome 49 (2015) no. 2, pp. 269-279. http://geodesic.mathdoc.fr/item/RCM_2015_49_2_a3/