%0 Journal Article %A V. I. Zubov %T Pencils of kinematic trajectories %J Doklady Akademii Nauk %D 1989 %P 817-819 %V 304 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_304_4_a11/ %G ru %F DAN_1989_304_4_a11