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@article{JRAM_1979__305_152071, author = {Ursel Kiehne}, title = {Bounded products in the theory of valued fields.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {9--36}, publisher = {mathdoc}, volume = {305}, year = {1979}, zbl = {0423.12022}, url = {http://geodesic.mathdoc.fr/item/JRAM_1979__305_152071/} }
Ursel Kiehne. Bounded products in the theory of valued fields.. Journal für die reine und angewandte Mathematik, Tome 305 (1979), pp. 9-36. http://geodesic.mathdoc.fr/item/JRAM_1979__305_152071/