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@article{JRAM_1973__0262_0263_151363, author = {Yu. Manin and V. Drinfeld}, title = {Periods of p-adic {Schottky} groups.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {239--247}, publisher = {mathdoc}, volume = {0262_0263}, year = {1973}, zbl = {0275.14017}, url = {http://geodesic.mathdoc.fr/item/JRAM_1973__0262_0263_151363/} }
Yu. Manin; V. Drinfeld. Periods of p-adic Schottky groups.. Journal für die reine und angewandte Mathematik, 0262_0263 (1973), pp. 239-247. http://geodesic.mathdoc.fr/item/JRAM_1973__0262_0263_151363/