LIGOURAS, P. Upper singular braid monoid SBn+. EDiMaST: Experiences of Teaching with Mathematics, Sciences and Technology, [S. l.], v. 5, p. 675–687, 2020. Disponível em: https://www.edimast.it/index.php/edimast/article/view/68. Acesso em: 1 may. 2025.