TY - JOUR AU - Matti Lehtinen TI - The dilatation of Beurling-Ahlfors extensions of quasisymmetric functions JO - Annales Fennici Mathematici PY - 1983 SP - 187 EP - 191 VL - 8 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1983.0817/ DO - 10.5186/aasfm.1983.0817 LA - en ID - AFM_1983_8_1_a11 ER -