@article{CMH_1996__71_2_140402,
     author = {Gaven J. Martin},
     title = {Triangle subgroups of {Kleinian} groups.},
     journal = {Commentarii mathematici Helvetici},
     pages = {339},
     publisher = {mathdoc},
     volume = {71},
     number = {2},
     year = {1996},
     zbl = {0865.30059},
     language = {un},
     url = {https://geodesic-test.mathdoc.fr/item/CMH_1996__71_2_140402/}
}