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@article{JRAM_1972__252_151185, author = {Manohar L. Madan}, title = {Class groups of global fields.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {171--177}, publisher = {mathdoc}, volume = {252}, year = {1972}, zbl = {0229.12012}, url = {http://geodesic.mathdoc.fr/item/JRAM_1972__252_151185/} }
Manohar L. Madan. Class groups of global fields.. Journal für die reine und angewandte Mathematik, Tome 252 (1972), pp. 171-177. http://geodesic.mathdoc.fr/item/JRAM_1972__252_151185/