%0 Journal Article %T Il problema di Stefan: regolarit¨¤ della frontiera libera %A Sandro Salsa %J Le Matematiche %D 1999 %I University of Catania %X We describe recent results on the regularity for the Stefan problem obtained in a joint work with I. Athanasopoulos and L. Caffarelli. %U http://www.dmi.unict.it/ojs/index.php/lematematiche/article/view/347