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@article{JRAM_1997__485_183542, author = {Alexandru Buium}, title = {Differential characters and characteristic polynomial of {Frobenius.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {209--219}, publisher = {mathdoc}, volume = {485}, year = {1997}, zbl = {0871.14035}, url = {http://geodesic.mathdoc.fr/item/JRAM_1997__485_183542/} }
Alexandru Buium. Differential characters and characteristic polynomial of Frobenius.. Journal für die reine und angewandte Mathematik, Tome 485 (1997), pp. 209-219. http://geodesic.mathdoc.fr/item/JRAM_1997__485_183542/