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@article{JRAM_1985__361_152758, author = {Harvey Cohn}, title = {Representation of a prime as the sum of squares in a tower of fields.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {135--144}, publisher = {mathdoc}, volume = {361}, year = {1985}, zbl = {0559.12001}, url = {http://geodesic.mathdoc.fr/item/JRAM_1985__361_152758/} }
Harvey Cohn. Representation of a prime as the sum of squares in a tower of fields.. Journal für die reine und angewandte Mathematik, Tome 361 (1985), pp. 135-144. http://geodesic.mathdoc.fr/item/JRAM_1985__361_152758/