KOOCHAKPOOR, T. Fuzzy Hyper Pseudo BCK-Ideals of Hyper Pseudo BCK-Algebras. Jordan Journal of Mathematics and Statistics, [S. l.], v. 15, n. 3, p. 381–398, 2023. DOI: 10.47013/15.3.1. Disponível em: https://jjms.yu.edu.jo/index.php/jjms/article/view/Nom1. Acesso em: 18 sep. 2024.