@article{JRAM_1986__372_152881,
     author = {Charles L. Epstein},
     title = {The hyperbolic {Gauss} map and quasiconformal reflections.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {96--135},
     publisher = {mathdoc},
     volume = {372},
     year = {1986},
     zbl = {0591.30018},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1986__372_152881/}
}