JAFARPOUR, M.; JANTANI, F.; LEOREANU, V. On Strongly Associative (Semi)Hypergroups. Journal of the Indonesian Mathematical Society, [S. l.], v. 23, n. 1, p. 43–54, 2017. DOI: 10.22342/jims.23.1.424.43-54. Disponível em: https://jims-a.org/index.php/jimsa/article/view/424. Acesso em: 26 apr. 2024.