%0 Journal Article %A Giovanni Mancini %A Roberta Musina %T A free boundary problem involving limiting Sobolev exponents. %J Manuscripta mathematica %D 1987 %P 77-94 %V 58 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1987__58_155212/ %F MM2_1987__58_155212