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@article{FAA_1975_9_4_a5, author = {B. L. Feigin}, title = {Characteristic classes of flags of foliations}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {49--56}, publisher = {mathdoc}, volume = {9}, number = {4}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1975_9_4_a5/} }
B. L. Feigin. Characteristic classes of flags of foliations. Funkcionalʹnyj analiz i ego priloženiâ, Tome 9 (1975) no. 4, pp. 49-56. http://geodesic.mathdoc.fr/item/FAA_1975_9_4_a5/