TY - JOUR AU - Jussi Väisälä TI - Piecewise quasiconformal maps are quasiconformal JO - Annales Fennici Mathematici PY - 1975 SP - 3 EP - 6 VL - 1 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1975.0129/ DO - 10.5186/aasfm.1975.0129 LA - en ID - AFM_1975_1_1_a0 ER -