1. On projective modules over semi—hereditary rings;Albrecht;Proc. Amer. Math. Soc.,1961
2. A non-commutative Hilbert basis theorem and subrings of matrices;Amitsur;Trans. Amer. Math. Soc.,1970
3. Free associative algebras;Cohn;Bull. London Math. Soc.,1969
4. Primringe mit Krull-dimension eins;Michler;J. für die reine und angewandte Mathematik,1970
5. Sugli anelli commutativi zero dimensionali con identita polinomiale;Procesi;Rend. Palermo II,1968