BLOOM, S. L.; ÉSIK, Z. Some Remarks on Regular Words. BRICS Report Series, [S. l.], v. 9, n. 39, 2002. DOI: 10.7146/brics.v9i39.21754. Disponível em: https://tidsskrift.dk/brics/article/view/21754. Acesso em: 18 jul. 2024.