%0 Journal Article %A B. V. Grigor'ev %T Characteristic classes of principal $G$-stratifications with coefficients belonging to sheafs of germs of differential forms %J Funkcionalʹnyj analiz i ego priloženiâ %D 1971 %P 45-58 %V 5 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1971_5_2_a4/ %G ru %F FAA_1971_5_2_a4