References
- Gardner, B. J., Wiegandt, R. (2004). Radical theory of Rings. New York: Marcel Dekker Inc.
- Herstein, I. N. (1964). Topics in Algebra. Xerox Corporation, USA.
- Veldsman, S. (2000). Radicals and splitting extensions of rings. Radicals and splitting extensions of rings. 23:21–36.
- Veldsman, S. (2013). Rings of matrices generated by a companion matrix. Rings of matrices generated by a companion matrix. 140:12–33.