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@article{JRAM_1987__381_152975, author = {Frank Gerth III}, title = {Densities for 3-class ranks in certain cubic extensions.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {161--180}, publisher = {mathdoc}, volume = {381}, year = {1987}, zbl = {0622.12008}, url = {http://geodesic.mathdoc.fr/item/JRAM_1987__381_152975/} }
Frank Gerth III. Densities for 3-class ranks in certain cubic extensions.. Journal für die reine und angewandte Mathematik, Tome 381 (1987), pp. 161-180. http://geodesic.mathdoc.fr/item/JRAM_1987__381_152975/