References
- Jordan , D.A. 1993 . Iterated skew polynomial rings and quantum groups . J.Alg. , 156 : 194 – 218 .
- Le Bruyn , L. 1995 . Conformal sl$sub:2$esub:enveloping algebras . Comm. Alg. , 23 ( 4 ) : 1325 – 1362 .
- Li , Huishi and Van Oystaeyen , F. 1990 . Filtrations on simple Artinian rings . J. Alg. , 132 ( 4 ) : 361 – 376 .
- Hussein , M. and Van Oystaeyen , F. 1996 . Discrete valuations extend to certain algebras of quantum type . Comm. Alg. , 24 ( 8 ) : 2551 – 2566 .
- Smith , S. P. 1992 . Quantum groups:An introduction and survey for ring theorists in Noncommutative Rings , Edited by: Montgomey , S. and Small , L.W. 131 – 178 . Berlin : Springer-verlag .