- Cohen , M. and Rowen , L.H. 1983 . Group Graded rings . Comm. algebra , 11 : 1253 – 1270 .
- Jespers , E. 1988 . Jacobson rings and rings strongly graded by an abelian group, . Israel J. Math. , 63 : 67 – 78 .
- Jespers , E. 1989 . Simple Abelian—Group Graded Rings, . Bollettino U.M.I. , 3A ( 7 ) : 103 – 106 .
- Jespers , E. and Wauters , P. 1988 . A general notion of noncommutative Krull rings, . J. Algebra , 112 : 388 – 415 .
- Matczuk , J. 1988 . Extended Centroids of Skew Polynomial Rings, . Rings, Math. J. Okayama Univ. , 30 : 13 – 20 .
- Nastasescu C. Van Oystaeyen F. Graded Ring Theory North-Holland New York 1982
- Nicholson , W.K. and Watters , J.F. 1983 . On tensor products and extended centroids . Proc. A.M.S. , 88 ( 2 ) : 215 – 217 .
- Passman , D.S. 1987 . Computing the symmetric ring of quotients, . J. Algebra , 105 : 207 – 235 .
- Passman , D.S. 1989 . “ Infinite Crossed Products, ” . New York, : Academic Press, .
Communications in Algebra
Volume 20, 1992 - Issue 12