ALI, Asad; KHAN, Madad; SHI, Fu-Gui. HESITANT FUZZY IDEALS IN ABEL-GRASSMANN’S GROUPOIDS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 35, p. 537–556, 2015. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6398. Acesso em: 16 aug. 2026.