K. LALITHA; S. SATHYA; S. SARGUNA. MODAL OPERATORS ON BIPOLAR FERMATEAN FUZZY MATRICES. Utilitas Mathematica , [S. l.], v. 122, n. 1, p. 2868–2878, 2025. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/2596. Acesso em: 7 may. 2026.