1. Auslander, M.: Representation theory of Artin algebras I, Comm. in Algebra, Vol. I No. 3, 177–268 (1974).
2. Auslander, M., Platzeck, M.I.: Representation theory of hereditary Artin algebras, Proc. Conf. on Representation theory (Philadelphia 1976), Marcel Dekker, 389–424 (1978).
3. Bautista, R.: Algebras close to hereditary algebras, Oberwolfach Conf. report, 17–21 (1977), preprint.
4. Bautista, R.: Irreducible maps and the radical of a category, preprint.
5. Bernstein, I.N., Gelfand, I.M., Ponomarev, V.A.: Coxeter functors and Gabriel’s theorem, Uspechi Mat. Nauk 28 (1973) translated in Russian Math. Surveys, 17–23 (1973).