PROKHORCHUK, V. On finite state automaton actions of HNN extensions of free abelian groups. Carpathian Mathematical Publications, [S. l.], v. 13, n. 1, p. 180–188, 2021. DOI: 10.15330/cmp.13.1.180-188. Disponível em: https://scijournals.pnu.edu.ua/index.php/cmp/article/view/5000. Acesso em: 19 apr. 2024.