FURTHER RESULTS ON COMBINATORIAL PROPERTIES OF ORDER-PRESERVING ALTERNATING SEMIGROUPS. Confluence Journal of Pure and Applied Science, [S. l.], v. 1, n. 2, p. 17–24, 2018. Disponível em: https://cjpas.org.ng/index.php/pub/article/view/4. Acesso em: 22 may. 2025.