TY  - JOUR
AU  - G. A. Kats
TI  - On some characteristic classes in the category of smooth $G$-fiberings
JO  - Sbornik. Mathematics
PY  - 1971
SP  - 176
EP  - 182
VL  - 15
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1971_15_2_a1/
LA  - en
ID  - SM_1971_15_2_a1
ER  -