Simple Acyclic Graphoidal Covering Number In A Semigraph. Journal of Namibian Studies : History Politics Culture, [S. l.], v. 35, p. 659–668, 2023. DOI: 10.59670/jns.v35i.3562. Disponível em: https://www.namibian-studies.com/index.php/JNS/article/view/3562. Acesso em: 2 nov. 2025.