TY - JOUR AU - Hengartner, W. TI - Distortion Theorems for Diffeomorphisms JO - Canadian mathematical bulletin PY - 1994 SP - 351 EP - 360 VL - 37 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1994-052-9/ DO - 10.4153/CMB-1994-052-9 ID - 10_4153_CMB_1994_052_9 ER -