B. SHANMUGAPRIYA; K. RAMESH; S. CHITRA. $IF\alpha^{**}g$ Closed Sets in Intuitionistic Fuzzy Topological Spaces. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 1 - A, p. 63–71, 2018. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/898. Acesso em: 17 may. 2024.