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@article{JRAM_1987__379_152956, author = {William C. Waterhouse}, title = {Discriminants of etale algebras and related structures.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {209--220}, publisher = {mathdoc}, volume = {379}, year = {1987}, zbl = {0609.13006}, url = {http://geodesic.mathdoc.fr/item/JRAM_1987__379_152956/} }
William C. Waterhouse. Discriminants of etale algebras and related structures.. Journal für die reine und angewandte Mathematik, Tome 379 (1987), pp. 209-220. http://geodesic.mathdoc.fr/item/JRAM_1987__379_152956/