AKIYAMA, J.; HITOTUMATU, S.; SATO, I. A NOTE ON THE EXISTENCE OF A UNIVERSAL POLYTOPE AMONG REGULAR 4-POLYTOPES. Journal of the Indonesian Mathematical Society, [S. l.], v. 19, n. 1, p. 41–47, 2013. DOI: 10.22342/jims.19.1.128.41-47. Disponível em: http://jims-a.org/index.php/jimsa/article/view/128. Acesso em: 25 apr. 2024.