1. Auslander, M.-Reiten, I. The Cohen-Macaulay type of Cohen-Macaulay rings, Advances in Math. 73, 1–23, (1989)
2. Bass, H. Algebraic K-theory, W. A. Benjamin, New York, (1968)
3. Bourbaki, N. Algebre commutative, Hermann, Paris, (1961)
4. Carter, R.W. Simple groups of Lie type, Wiley, New York, (1972)
5. Carter R.W. Finite groups of Lie type. Conjugacy Classes and Complex characters, Wiley-Interscience, (1985)