WHITE, D. GEM and the $\Upsilon(1S)$. Journal of Informatics and Mathematical Sciences, [S. l.], v. 2, n. 2 & 3, p. 71–93, 2010. DOI: 10.26713/jims.v2i2 & 3.29. Disponível em: http://rgnpublications.com/journals/index.php/jims/article/view/29. Acesso em: 2 may. 2024.