1. Dixmier, J.: Enveloping Algebras, Grad. Stud Math., vol. 11. Amer. Math. Soc., Providence, RI (1996)
2. Dixmier, J., Duflo, M., Vergne, M.: Sur la représentation coadjointe d’une algèbre de Lie. (French) Compositio Math. 29, 309–323 (1974)
3. Brown, K., Gordon, I.: Poisson orders, symplectic reflection algebras and representation theory. J. Reine Angew. Math. 559, 193–216 (2003)
4. Goodearl, K., Launois, S.: The Dixmier-Moeglin equivalence and a Gel’fand-Kirillov problem for Poisson polynomial algebras. Bull. Soc. Math. France 139(1), 1–39 (2011)
5. Joseph, A., Shafrir, D.: Polynomiality of invariants, unimodularity and adapted pairs. Transform. Groups 5, 851–882 (2010)