B. AMUDHAMBIGAI; G. VASUKI; A. RAMYA. A View on Contra-Fr-B-Continuous M-Set Functions in Multiset Topological Spaces. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 3, p. 349–356, 2018. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/389. Acesso em: 3 jul. 2024.