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@article{CM_1996__100_3_351_0, author = {Li, Hua-Chieh}, title = {Counting periodic points of $p$-adic power series}, journal = {Compositio Mathematica}, pages = {351--364}, publisher = {Kluwer Academic Publishers}, volume = {100}, number = {3}, year = {1996}, mrnumber = {1387670}, zbl = {0871.11084}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1996__100_3_351_0/} }
Li, Hua-Chieh. Counting periodic points of $p$-adic power series. Compositio Mathematica, Tome 100 (1996) no. 3, pp. 351-364. http://geodesic.mathdoc.fr/item/CM_1996__100_3_351_0/