TY - JOUR AU - Björn Gustafsson AU - Makoto Sakai TI - Sharp estimates of the curvature of some free boundaries in two dimensions JO - Annales Fennici Mathematici PY - 2003 SP - 123 EP - 142 VL - 28 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AFM_2003_28_1_a8/ LA - en ID - AFM_2003_28_1_a8 ER -