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@article{CMH_1986__61_140045, author = {Mika Sepp\"al\"a and Tuomas Sorvali}, title = {Parametrization of {M\"obius} groups acting in a disk.}, journal = {Commentarii mathematici Helvetici}, pages = {149--160}, publisher = {mathdoc}, volume = {61}, year = {1986}, zbl = {0606.30042}, url = {http://geodesic.mathdoc.fr/item/CMH_1986__61_140045/} }
Mika Seppälä; Tuomas Sorvali. Parametrization of Möbius groups acting in a disk.. Commentarii mathematici Helvetici, Tome 61 (1986), pp. 149-160. http://geodesic.mathdoc.fr/item/CMH_1986__61_140045/