ZOLFAGHARI, P. About Order 3 Hypergroups Over Group Which Arisе From Groups of Order 18. Mathematical Problems of Computer Science, [S. l.], v. 38, p. 93–94, 2021. Disponível em: http://mpcs.sci.am/index.php/mpcs/article/view/578. Acesso em: 1 may. 2024.