%0 Journal Article %A Björn Gustafsson %A Makoto Sakai %T Sharp estimates of the curvature of some free boundaries in two dimensions %J Annales Fennici Mathematici %D 2003 %P 123-142 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_2003_28_1_a8/ %G en %F AFM_2003_28_1_a8