KARGAR, Reza. Evaluating Urban Efficiency in Air Pollution Management: A DEA Study of 20 Iranian Cities. International Journal of Operations Research and Artificial Intelligence , [S. l.], v. 1, n. 3, p. 131–138, 2025. DOI: 10.48314/ijorai.v1i3.74. Disponível em: https://mail.ijorai.reapress.com/journal/article/view/74.. Acesso em: 10 dec. 2025.