@article{FAA_1986_20_2_a22,
     author = {S. L. Tabachnikov},
     title = {Characteristic classes of parabolic fiberings of the series $B$, $C$, and $D$, and the degrees of isotropic {Grassmanians}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {84--85},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1986_20_2_a22/}
}