TOMASZEWSKI, Witold. Self-Similar Automorphisms of a Free Group of Countable Rank. Mathematica Scandinavica, Berkeley, CA, United States, v. 116, n. 1, p. 126–140, 2015. DOI: 10.7146/math.scand.a-20454. Disponível em: https://journals.msp.org/mscand/article/view/396. Acesso em: 24 jul. 2026.