GARCIA-MENDOZA, Carlos; VIELMA, Jorge; JÁTEM, José. Some Properties of Primal Topologies Seen as Semirings. Topology Proceedings, [S. l.], v. 62, p. 163–170, 2023. Disponível em: https://www.topologyproceedings.org/index.php/tp/article/view/102. Acesso em: 30 jun. 2026.