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@article{IM_1995__122_3_144320, author = {M. Artin and J.T. Stafford}, title = {Noncommutative graded domains with quadratic.}, journal = {Inventiones mathematicae}, pages = {231--276}, publisher = {mathdoc}, volume = {122}, number = {3}, year = {1995}, zbl = {0849.16022}, url = {http://geodesic.mathdoc.fr/item/IM_1995__122_3_144320/} }
M. Artin; J.T. Stafford. Noncommutative graded domains with quadratic.. Inventiones mathematicae, Tome 122 (1995) no. 3, pp. 231-276. http://geodesic.mathdoc.fr/item/IM_1995__122_3_144320/