@article{PMIHES_1993__77__63_0, author = {Lam, Tsit-Yuen and Leep, David B. and Tignol, Jean-Pierre}, title = {Biquaternion algebras and quartic extensions}, journal = {Publications Math\'ematiques de l'IH\'ES}, volume = {78}, year = {1993}, pages = {63-102}, mrnumber = {95f:12004}, zbl = {0801.11048}, language = {en}, url = {http://dml.mathdoc.fr/item/PMIHES_1993__77__63_0} }
Lam, Tsit Yuen; Leep, David B.; Tignol, Jean-Pierre. Biquaternion algebras and quartic extensions. Publications Mathématiques de l'IHÉS, Tome 78 (1993) pp. 63-102. http://gdmltest.u-ga.fr/item/PMIHES_1993__77__63_0/
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