ABE, T. O. Genesis of Selected Mathematical Notations. Journal of Research in Education and Society (JRES) , [S. l.], v. 3, n. 2, p. 24–28, 2012. Disponível em: http://icidr.org.ng/index.php/Jres/article/view/1283. Acesso em: 19 sep. 2024.