1. M. Artin, On Azymaya algebras and finite dimensional representations of rings, J. Algebra 11 (1969), p. 532–563.
2. M. Auslander, Representation dimension of artin algebras, Queen Mary College, Mathematics Notes, 1971.
3. M. Demazure—P. Gabriel, Groupes algébriques linéaires, North-Holland Publishing Company 1970, quoted DG
4. J. Dieudonne—A. Grothendieck, Eléments de Géometrie Algébriques, Presses Universitaires, Paris 1960, quoted EGA.
5. P. Gabriel, Indecomposable representations II, Symposia math. Ist. Naz. di Alta Mat., Vol. XI, 1973.