%0 Journal Article %A A. M. Vershik %A V. Ya. Gershkovich %T A nilpotent Lie algebras bundle over a non-holonomic manifold (Nilpotentization) %J Zapiski Nauchnykh Seminarov POMI %D 1989 %P 21-40 %V 172 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1989_172_a1/ %G ru %F ZNSL_1989_172_a1