Roberto, Kaique Matias de, and Ana Luiza da Conceição Tenório. “The Category of Hypergroups: Seeking for a Generalized Version of Abelian Categories”. Latin American Journal of Mathematics 2, no. 02 (July 26, 2023): 18–42. Accessed November 15, 2024. https://lajm.ufscar.br/index.php/capa/article/view/14.