BÖCKENHAUER, H.-J.; FORLIZZI, L.; HROMKOVIC, J.; KNEIS, J.; KUPKE, J.; PROIETTI, G.; WIDMAYER, P. On the Approximability of TSP on Local Modifications of Optimally Solved Instances. Algorithmic Operations Research, [S. l.], v. 2, n. 2, p. 83, 2007. Disponível em: https://journals.lib.unb.ca/index.php/AOR/article/view/2803. Acesso em: 9 jun. 2023.