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@article{CMH_1994__69_4_140328, author = {Bruno Kahn}, title = {On the cohomology of biquadratic extensions.}, journal = {Commentarii mathematici Helvetici}, pages = {120--136}, publisher = {mathdoc}, volume = {69}, number = {4}, year = {1994}, zbl = {0798.12007}, url = {http://geodesic.mathdoc.fr/item/CMH_1994__69_4_140328/} }
Bruno Kahn. On the cohomology of biquadratic extensions.. Commentarii mathematici Helvetici, Tome 69 (1994) no. 4, pp. 120-136. http://geodesic.mathdoc.fr/item/CMH_1994__69_4_140328/