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@article{JRAM_1993__440_153536, author = {Kay Wingberg}, title = {On the maximal unramified p-extension of an algebraic number field.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {129--156}, publisher = {mathdoc}, volume = {440}, year = {1993}, zbl = {0779.11054}, url = {http://geodesic.mathdoc.fr/item/JRAM_1993__440_153536/} }
Kay Wingberg. On the maximal unramified p-extension of an algebraic number field.. Journal für die reine und angewandte Mathematik, Tome 440 (1993), pp. 129-156. http://geodesic.mathdoc.fr/item/JRAM_1993__440_153536/