%0 Journal Article %A N.H. Kuiper %A W. III Meeks %T Total curvature for knotted surfaces. %J Inventiones mathematicae %D 1984 %P 25-70 %V 77 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1984__77_143137/ %F IM_1984__77_143137