BALKOVÁ, L. Return Words and Recurrence Function of a Class of Infinite Words. Acta Polytechnica, [S. l.], v. 47, n. 2-3, 2007. DOI: 10.14311/920. Disponível em: https://ojs.cvut.cz/ojs/index.php/ap/article/view/920. Acesso em: 6 may. 2024.