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@article{CMH_1993__68_2_140297, author = {J.-P. Tignol and A.S. Merkurjev}, title = {Galois cohomology of biquadratic extensions.}, journal = {Commentarii mathematici Helvetici}, pages = {138--170}, publisher = {mathdoc}, volume = {68}, number = {2}, year = {1993}, zbl = {0781.12005}, url = {http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140297/} }
J.-P. Tignol; A.S. Merkurjev. Galois cohomology of biquadratic extensions.. Commentarii mathematici Helvetici, Tome 68 (1993) no. 2, pp. 138-170. http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140297/