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@article{PORMA_1993__50_2_115818, author = {Chen, Chengxiang}, title = {The {Brauer} ring of a commutative ring}, journal = {Portugaliae mathematica}, pages = {163--170}, publisher = {mathdoc}, volume = {50}, number = {2}, year = {1993}, mrnumber = {1244496}, zbl = {0796.13001}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1993__50_2_115818/} }
Chen, Chengxiang. The Brauer ring of a commutative ring. Portugaliae mathematica, Tome 50 (1993) no. 2, pp. 163-170. http://geodesic.mathdoc.fr/item/PORMA_1993__50_2_115818/