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@article{MZ_1993__213_1_174545, author = {Joachim Gr\"ater}, title = {Central extensions of ordered skew fields.}, journal = {Mathematische Zeitschrift}, pages = {531--556}, publisher = {mathdoc}, volume = {213}, number = {1}, year = {1993}, zbl = {0789.12002}, url = {http://geodesic.mathdoc.fr/item/MZ_1993__213_1_174545/} }
Joachim Gräter. Central extensions of ordered skew fields.. Mathematische Zeitschrift, Tome 213 (1993) no. 1, pp. 531-556. http://geodesic.mathdoc.fr/item/MZ_1993__213_1_174545/