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@article{DAN_1968_178_2_a11, author = {D. B. Fuchs}, title = {The {Maslov--Arnolʹd} characteristic classes}, journal = {Doklady Akademii Nauk}, pages = {303--306}, publisher = {mathdoc}, volume = {178}, number = {2}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_2_a11/} }
D. B. Fuchs. The Maslov--Arnolʹd characteristic classes. Doklady Akademii Nauk, Tome 178 (1968) no. 2, pp. 303-306. http://geodesic.mathdoc.fr/item/DAN_1968_178_2_a11/