Wene, G. P.: Clifford algebras, matrix algebras and classical groups.
(English).
In:
Frolík, Z., Souček, V.
and Vinárek, J. (eds.): Proceedings of the Winter School "Geometry and Physics".
Circolo Matematico di Palermo, Palermo, 1985.
pp. [221]-226
Beĭdar, Konstantin Igorjevič:
Идемпотенты в кольцах с полиномиальным тождеством.
(Russian) [Idempotents in rings with a polynomial identity].Commentationes Mathematicae Universitatis Carolinae,
vol. 22
(1981),
issue 4,
pp. 755-759