RONASI, M.; ESLAMI, E. Closure systems over effect algebras. Nexo Scientific Journal, [S. l.], v. 34, n. 02, p. 733–743, 2021. DOI: 10.5377/nexo.v34i02.11558. Disponível em: https://camjol.info/index.php/NEXO/article/view/11558. Acesso em: 23 nov. 2024.