SAMPSON, M. I.; LIPCSEY, Z. .; AKAK, E. .; EFIONG, F. .; ESSIEN, M. . Algorithm for semigroup bases I. International Journal of Mathematical Analysis and Modelling, [S. l.], v. 7, n. 1, 2024. Disponível em: https://journal.tnsmb.org/index.php/ijmam/article/view/142. Acesso em: 12 sep. 2026.