1. Sugli omeomorfismi delle varietà algebriche;Andreotti,1969
2. On the join of Hengsel rings;Artin,1971
3. On the Ubiquity of Gorenstein rings;Bass,1963
4. Algebraic K-theory;Bass,1968
5. Grothendieck groups and Picard groups of abelian group rings;Bass,1967