Automorphism Groups of Squares and of Free Algebras.

Keith A. Kearnes Steven T. Tschantz Automorphism Groups of Squares and of Free Algebras. 461-505 2007 17 IJAC 3 http://dx.doi.org/10.1142/S0218196707003615 db/journals/ijac/ijac17.html#KearnesT07