BACELO, A.; ETAYO, J. J.; MARTÍNEZ, E. Comparing the real genus and the symmetric crosscap number of a group. CUBO, A Mathematical Journal, [S. l.], v. 27, n. 3, p. 659–679, 2025. DOI: 10.56754/0719-0646.2703.659. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/4188. Acesso em: 19 jan. 2026.