%0 Journal Article %A J. Siegele %A M. Pfurner %A H.-P. Schröcker %T Space Kinematics and Projective Differential Geometry Over the Ring of Dual Numbers %J Journal for geometry and graphics %D 2021 %P 19-31 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_2021_25_1_JGG_2021_25_1_a1/ %F JGG_2021_25_1_JGG_2021_25_1_a1