%0 Journal Article %A A. M. Verbovetsky %A A. M. Vinogradov %A D. M. Gessler %T Scalar differential invariants and characteristic classes of homogeneous geometrical structures %J Matematičeskie zametki %D 1992 %P 15-26 %V 51 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1992_51_6_a2/ %G ru %F MZM_1992_51_6_a2