TY - JOUR AU - P. Tukia TI - A rigidity theorem for Möbius groups. JO - Inventiones mathematicae PY - 1989 SP - 405 EP - 432 VL - 97 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1989__97_2_143708/ ID - IM_1989__97_2_143708 ER -