WORYNA, Adam. The group of balanced automorphisms of a spherically homogeneous rooted tree. Annales Mathematicae Silesianae, [S. l.], v. 23, p. 83–101, 2009. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14046. Acesso em: 15 dec. 2025.