1. Quadratic Forms Over Semilocal Rings;Baeza,1978
2. Skew Fields;Draxl,1983
3. Über gemeinsame separabel-quadratische Zerfällungskörper von Quaternionenalgebren;Draxl;Nachr. Akad. Wiss. Göttingen Math.-Phys. Kl. II,1975
4. A note on the linkage of Hurwitz algebras;Elduque;Manuscr. Math.,2005
5. The Algebraic and Geometric Theory of Quadratic Forms;Elman,2008