References
- Anderson , F.W. and Fuller , K.R. 1992 . Rings and Categories of Modules , Berlin : Springer-Verlag . Heidelberg-New York
- Armendariz E.P. A private communication 1996
- Baccella , G. 1988 . Von Neumann regularity of V-rings with artinian primitive factor rings . Proc. Amer. Math. Soc , 103 : 747 – 749 .
- Cozzens , J. 1970 . Homological properties of the ring of differential polynomials . Bull. Amer. Math. Soc , 76 : 75 – 79 .
- Faith , C. 1976 . Algebra II: Ring Theory , Berlin : Springer-Verlag . Heidelberg-New York
- Fisher , J.W. and Snider , R.L. 1974 . On the von Neumann regularity of rings with regular prime factor rings . Pacific J. Math , 54 : 135 – 144 .
- Goodearl , K.R. 1979 . Von Neumann Regular Rings , London : Pitman .
- Hirano , Y. and Park , J.K. 1991 . Rings for which the converse of Schur’s Lemma holds . Math. J. Okayama Univ , 33 : 121 – 131 .
- McConnell , J.C. and Robson , J.C. 1987 . Noncommutative Noetherian Rings , New York : John Wiley & Sons .
- Osofsky , B.L. 1971 . On twisted polynomial rings . J. Algebra , 18 : 597 – 607 .
- Rowen , L.H. 1980 . Polynomial Identities in Ring Theory , New York : Academic Press .
- Rosenberg , A. and Zelinsky , D. 1959 . Finiteness of the injective hull . Math. Zeitschr , 70 : 372 – 380 .