A. V. Russev, “On conjugacy in groups of finite-state automorphisms of rooted trees”, Ukr. Mat. Zhurn., vol. 60, no. 10, pp. 1357–1366, Oct. 2008, Accessed: Apr. 23, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3250