GER, R. On a Problem of Roger Cuculiere. Journal of Informatics and Mathematical Sciences, [S. l.], v. 1, n. 2 & 3, p. 157–163, 2009. DOI: 10.26713/jims.v1i2 & 3.19. Disponível em: http://rgnpublications.com/journals/index.php/jims/article/view/19. Acesso em: 24 nov. 2024.