1. Introduction 2. Notations and conventions 3. A certain class of rings 4. Some constructions 5. The algebras introduced by S.P. Smith 6. The Weyl algebras 7. Rings of differential operators for torus invariants 8. Dimension theory for $B̂\chi $ 9. Finite global dimension 10. Finite dimensional representations 11. An example
Notes
"November 1998, volume 136, number 650 (fifth of 6 numbers)."