@article{AFM_2018_43_1_a30,
     author = {Christian Pommerenke and Margarita Toro},
     title = {A generalization of the parametrized modular group},
     journal = {Annales Fennici Mathematici},
     pages = {509--519},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {2018},
     doi = {10.5186/aasfm.2018.4330},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2018.4330/}
}