ZULFIQAR, M. <b>Some properties of (α, β)-fuzzy positive implicative ideals in BCK-algebras</b> - doi: 10.4025/actascitechnol.v35i2.15898. Acta Scientiarum. Technology, [S. l.], v. 35, n. 2, p. 371–377, 2012. DOI: 10.4025/actascitechnol.v35i2.15898. Disponível em: https://periodicos.uem.br/actascitechnol/index.php/ActaSciTechnol/article/view/15898. Acesso em: 26 set. 2025.