@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}, pages = {63--102}, publisher = {Institut des Hautes \'Etudes Scientifiques}, volume = {77}, year = {1993}, zbl = {0801.11048}, mrnumber = {95f:12004}, language = {en}, url = {http://archive.numdam.org/item/PMIHES_1993__77__63_0/} }