TY - JOUR AU - Bensid, Sabri AU - Bouguima, Sidi Mohammed TI - Existence and multiplicity of solutions to elliptic problems with discontinuities and free boundary conditions JO - Electronic journal of differential equations PY - 2010 VL - 2010 UR - http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a63/ LA - en ID - EJDE_2010__2010__a63 ER -