%0 Journal Article %A Yôtarô Tsukamoto %T On the Total Absolute Curvature of Closed Curves in Manifolds of Negative Curvature. %J Mathematische Annalen %D 1974 %P 313-320 %V 210 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1974__210_162627/ %F MAN_1974__210_162627