%0 Journal Article %A Rugang Ye %T Regularity of a Minimal Surface at its Free Boundary. %J Mathematische Zeitschrift %D 1988 %P 261-276 %V 198 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1988__198_3_173925/ %F MZ_1988__198_3_173925