Hereditariness, strongness and relationship between Brown-McCoy and Behrens radicals. Tumurbat, S.; Zand, H. — 2001 Beiträge zur Algebra und Geometrie
Hoehnke Radicals for Right Lie Algebras S. Tumurbat — 1992 Beiträge zur Algebra und Geometrie = Contributions to algebra and geometry