ZHANG, P.; ZHAO, W.; ZHU, D. Complexity and Approximation Results for the Min-Sum and Min-Max Disjoint Paths Problems. COMPUTING AND INFORMATICS, [S. l.], v. 32, n. 1, p. 23–45, 2013. Disponível em: https://www.cai.sk/ojs/index.php/cai/article/view/1465. Acesso em: 29 mar. 2023.