A. A. RAMADAN; M. EL DARDERY; Y. C. KIM. Some Properties of $r$-$T_{2}$ Spaces. International Journal of Mathematics And its Applications, [S. l.], v. 3, n. 2, p. 207–219, 2015. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/439. Acesso em: 6 may. 2024.