1. D. D. Anderson—D. F. Anderson,Divisorial ideals and invertible ideals in a graded integral domains, J. Algebra,76 (1982), pp.549–569.
2. D. F. Anderson,Graded Krull domains, Comm. Algebra,7 (1979), pp. 79–106.
3. M. Arezzo—S. Greco,Sul gruppo delle classi di ideali, Ann. Sc. Norm. Sup. Pisa,21 (1967), pp. 459–483.
4. N. Bourbaki,Algèbre commutative, Ch. I–VII, Hermann, Paris (1961–1965).
5. M. P. Cavaliere,Sui moduli liberi e proiettivi graduati, Boll. U.M.I., (5),14-A (1977), pp. 82–91.