AHMED, Hasanain Hamed. Nonlinear Programming Models for Robust Queuing Systems under Fuzzy Sets. Jurnal Pendidikan Matematika, [S. l.], v. 2, n. 4, p. 14, 2025. DOI: 10.47134/ppm.v2i4.1991. Disponível em: https://edu.pubmedia.id/index.php/ppm/article/view/1991. Acesso em: 23 jun. 2026.