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://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14046. Acesso em: 8 may. 2025.