%0 Journal Article %A Claus Gerhardt %T Hypersurfaces of Prescribed Mean Curvature over Obstacles. %J Mathematische Zeitschrift %D 1973 %P 169-186 %V 133 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1973__133_171950/ %F MZ_1973__133_171950