SOLA, M. A. . On Extremal Topology. The Libyan Journal of Science, [S. l.], v. 19, n. B, p. 39–42, 2016. DOI: 10.55276/ljs.v19iB.160. Disponível em: http://uot.edu.ly/journals/index.php/ljs/article/view/160. Acesso em: 30 jun. 2024.