THRIVIKRAMAN, T. Topological Reflections and Nets. The Journal of the Indian Mathematical Society, [S. l.], v. 38, n. 1-4, p. 191–199, 1974. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/16691. Acesso em: 28 apr. 2024.