ROY, B. On Weakly (μ, λ)-Open Functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 10, p. 1425–1430, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2234. Acesso em: 6 dec. 2025.