JALAL MITLIF, R. Solving fuzzy fractional linear programming problems by ranking function methods. مجلة المستنصرية للعلوم والتربية, [S. l.], v. 17, n. 1, p. 93–108, 2020. Disponível em: https://edumag.uomustansiriyah.edu.iq/index.php/mjse/article/view/594. Acesso em: 4 2024.