BARRO, M.; BOGNINI, K. E.; TAPSOBA, T. Combinatorics on words obtaining by \(k\) to \(k\) substitution and \(k\) to \(k\) exchange of a letter on modulo-recurrent words. Malaya Journal of Matematik, India, v. 11, n. S, p. 82–91, 2023. DOI: 10.26637/mjm11S/006. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/646. Acesso em: 20 may. 2024.