GUTIN, Gregory; KARAPETYAN, Daniel. Generalized Traveling Salesman Problem Reduction Algorithms. Algorithmic Operations Research, [S. l.], v. 4, n. 2, p. Pages 144 – 154, 2009. Disponível em: https://journals.lib.unb.ca/index.php/AOR/article/view/5660. Acesso em: 24 apr. 2024.