1. E. Artin, Geometric Algebra, Interscience, New York, 1957.
2. F. A. Bogomolov, On two conjectures in birational algebraic geometry, in Algebraic Geometry and Analytic Geometry, ICM-90 Satellite Conference Proceedings (A. Fujiki et al., eds.), Springer-Verlag, Tokyo, 1991, pp. 26–52.
3. F. A. Bogomolov and Y. Tschinkel, Commuting elements in Galois groups of function fields, in Motives, Polylogarithms and Hodge Theory (F.A. Bogomolov and L. Katzarkov, eds.), International Press, Somerville, MA, 2002, pp. 75–120.
4. N. Bourbaki, Algèbre commutative, Hermann, Paris, 1964.
5. AMS Mathematical Surveys and Monographs;I. Efrat,2006