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@article{DAN_1961_137_6_a3, author = {B. B. Venkov}, title = {Characteristic classes for finite groups}, journal = {Doklady Akademii Nauk}, pages = {1274--1277}, publisher = {mathdoc}, volume = {137}, number = {6}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_137_6_a3/} }
B. B. Venkov. Characteristic classes for finite groups. Doklady Akademii Nauk, Tome 137 (1961) no. 6, pp. 1274-1277. http://geodesic.mathdoc.fr/item/DAN_1961_137_6_a3/