@article{00147593, title = {Outer compositions of hyperbolic/loxodromic linear fractional transformations.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {15}, year = {1992}, pages = {819-822}, doi = {10.1155/S016117129200108X}, zbl = {0768.30002}, language = {en}, url = {http://dml.mathdoc.fr/item/00147593} }
Gill, John. Outer compositions of hyperbolic/loxodromic linear fractional transformations.. International Journal of Mathematics and Mathematical Sciences, Tome 15 (1992) pp. 819-822. doi : 10.1155/S016117129200108X. http://gdmltest.u-ga.fr/item/00147593/