TY - JOUR AU - Daniela De Silva TI - Free boundary regularity for a problem with right hand side JO - Interfaces and free boundaries PY - 2011 SP - 223 EP - 238 VL - 13 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4171/ifb/255/ DO - 10.4171/ifb/255 ID - 10_4171_ifb_255 ER -