1. The Poincare series for the algebra of covariants of a binary form;Bedratyuk;Int. J. Algebra,2010
2. A proof of Jantzen conjectures;Beilinson,1993
3. Analytic D-Modules and Applications;Björk,1993
4. Differential operators on a cubic cone;Bernšteĭn;Uspekhi Mat. Nauk,1972
5. Éléments de mathématique. Fasc. XXVI. Groupes et algèbres de Lie. Chapitre I: Algèbres de Lie;Bourbaki,1971