TY  - JOUR
AU  - S. L. Tabachnikov
TI  - Characteristic classes of parabolic fiberings of the series $B$, $C$, and $D$, and the degrees of isotropic Grassmanians
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1986
SP  - 84
EP  - 85
VL  - 20
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1986_20_2_a22/
LA  - ru
ID  - FAA_1986_20_2_a22
ER  -