1. Yu. A. Bahturin, Identical Relations in Lie Algebras, VNU Science Press, Utrecht, 1987.
2. de Gruyter Expositions in Mathematics;Y A Bahturin,1992
3. F. A. Berezin, Several remarks on the associative hull of a Lie algebra, Funkcional’nyi Analiz i ego Priloženija 1 (1967), 1–14.
4. Graduate Studies in Mathematics;J Dixmier,1996
5. V. Drensky, Polynomial identities for the Jordan algebra of a symmetric bilinear form, Journal of Algebra 108 (1987), 66–87.