References
- Bergen , J. Derivation algebras of rings related to Heisenberg algebras. To appear in J. Algebra Appl
- Bergen , J. 2003 . X-inner automorphisms, automorphisms, and isomorphisms of skew polynomial rings . Comm. Alg. , 31 ( 2 ) : 1007 – 1029 .
- #Communicated by E. Puczylowski.