S. Amitsur/J. Levitzki: Minimal identities for algebras. 
Proc. AMS 1 (1950), 449-463.

K. Beidar/W. Martindale/A. Mikhalev: Rings with generalized identities.
Dekker 1996, 520p. $185.

Vesselin Drensky/Edward Formanek: Polynomial identity rings. Birkhäuser 2004, 200p. $40.

5136 Edward Formanek: Polynomial identities and the Cayley-Hamilton theorem.
Math. Intell. 11/1 (1989), 37-39.

Alexei Kanel-Belov/Louis Halle Rowen: Computational aspects of
polynomial identities. Peters 2005, 380p. $69.

Irving Kaplansky: Rings with a polynomial identity.
Bull. AMS 54 (1948), 575-580.

Claudio Procesi: The invariant theory of nxn matrices.
Adv. Math. 19 (1976), 306-381.

18028 Louis Rowen: Review of the book "Polynomial identity rings" by
Drensky/Formanek. Bull. AMS 43/2 (2006), 259-267.