FARHAN, A. M.; YANG, X. S. ON upper and lower SP-θ (semi-pre-θ)-Continuous Multifunctions. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 6, n. 2, p. 988–998, 2014. DOI: 10.24297/jam.v6i2.3652. Disponível em: https://rajpub.com/index.php/jam/article/view/3652. Acesso em: 22 nov. 2024.