REFERENCES
- Smoktunowicz , A. ( 2000 ). Polynomial rings over nil rings need not be nil . J. Algebra 233 : 427 – 436 .
- Smoktunowicz , A. , Puczył owski, E. R. ( 2001 ). A polynomial ring that is Jacobson radical and not nil . Israel J. Math. 124 : 317 – 325 .
- Communicated by A. Smoktunowicz.