1. Algebraic Numbers and Algebraic Functions;Artin,1967
2. Galois theory and Galois cohomology of commutative rings;Chase;Mem. Amer. Math. Soc.,1968
3. Separable algebras over commutative rings;DeMeyer,1971
4. Basic Algebra I;Jacobson,1974
5. Theorie de la descente et algèbres d'Azumaya;Knus,1974