TY - JOUR AU - Rosemarie Bongers TI - Stretching and rotation sets of quasiconformal mappings JO - Annales Fennici Mathematici PY - 2019 SP - 103–123 EP - 103–123 VL - 44 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2019.4423/ DO - 10.5186/aasfm.2019.4423 LA - en ID - AFM_2019_44_1_a6 ER -