ET. AL., Geetha Jeyalakshmi R,. Structures, Operations and their Applications to Topology. Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 12, n. 2, p. 2199 – 2203, 2021. Disponível em: https://www.turcomat.org/index.php/turkbilmat/article/view/1908. Acesso em: 17 oct. 2025.