GOVINDARAJAN, S.; RAMESH, G. On the Hypergroups Associated with $n$-ary Relations. Journal of Informatics and Mathematical Sciences, [S. l.], v. 6, n. 2, p. 61–76, 2014. DOI: 10.26713/jims.v6i2.244. Disponível em: http://rgnpublications.com/journals/index.php/jims/article/view/244. Acesso em: 29 mar. 2024.