1. J. Dyer, E. Formanek, and E. Grossman, “On the linearity of automorphism groups of free groups,” Arch. Math., 38, 404–409 (1982).
2. M. Hall, The Theory of Groups, Macmillan, New York (1959).
3. V. P. Platonov and A. Potapchik, “New combinatorial properties of linear groups,” J. Algebra, 235, 399–415 (2001).
4. Y. B. Samsonov and O. I. Tavgen, “An image unipotency of a representation of F
2(x, y) by matrices in GLn(C) by mapping of generators and primitive elements into unipotent matrices, n = 2, 3, 4,” Dokl. Nats. Akad. Nauk Belarusi, 45, No. 6, 29–32 (2001).
5. O. I. Tavgen and X. Yang, “An image unipotency of a representation of F
2(x, y) in GL(5,ℂ),” Vestn. BGU, Ser. 1, No. 3, 74–79 (2009).