LI, Chang. Ranking of factors affecting environmental pollution. International journal of industrial engineering and operational research, [S. l.], v. 5, n. 3, p. 1–11, 2023. DOI: 10.22034/ijieor.v5i3.47. Disponível em: https://bgsiran.ir/journal/ojs-3.1.1-4/index.php/IJIEOR/article/view/47. Acesso em: 5 sep. 2026.