Differential operators on homogeneous spaces. II : relative enveloping algebras

Borho, Walter; Brylinski, Jean-Luc

Bulletin de la Société Mathématique de France, Volume 117 (1989) p. 167-210

On the Joseph-small additivity principle for goldie ranks. A study on extensions of noetherian rings with applications to enveloping algebras

Borho, Walter

Compositio Mathematica, Volume 47 (1982) p. 3-29