1. Rings and Categories of Modules;Anderson,1974
2. Cohen–Macaulay Rings;Bruns,1998
3. Commutative Algebra with a View Toward to Algebraic Geometry;Eisenbud,1995
4. On graded rings I;Goto;J. Math. Soc. Japan,1978
5. A First Course in Noncommutative Rings;Lam,1991