NANASILP, S.; WISITTIPANICH, W. A Mathematical Model for Pollution Travelling Salesman Problem. Thai Journal of Operations Research : TJOR, [S. l.], v. 8, n. 1, p. 20–25, 2020. Disponível em: https://ph02.tci-thaijo.org/index.php/TJOR/article/view/238359. Acesso em: 1 oct. 2026.