Contra-(Λ, sp)-continuity and δ(Λ, sp)-closed sets. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 15, n. 4, p. 1694–1704, 2022. DOI: 10.29020/nybg.ejpam.v15i4.4370. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/4370.. Acesso em: 2 may. 2024.