%0 Journal Article %A Adolf Karger %T Curvature Properties of 6-Parametric robot manipulators. %J Manuscripta mathematica %D 1989 %P 311-328 %V 65 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1989__65_3_155442/ %F MM2_1989__65_3_155442