Upper and lower weakly (Λ, sp)-continuous multifunctions. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 16, n. 2, p. 1047–1058, 2023. DOI: 10.29020/nybg.ejpam.v16i2.4573. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/4573. Acesso em: 21 dec. 2024.