%0 Journal Article %A S. Hildebrandt %A J.C.C. Nitsche %T Optimal Boundary Regularity for Minimal Surfaces with a Free Boundary. %J Manuscripta mathematica %D 1980 %P 357-364 %V 33 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1980__33_154754/ %F MM2_1980__33_154754