KUROKI, Yuko; MATSUI, Tomomi. Approximation Algorithm for Cycle-Star Hub Network Design Problems and Cycle-Metric Labeling Problems. Journal of Graph Algorithms and Applications, [S. l.], v. 23, n. 1, p. 93–110, 2019. DOI: 10.7155/jgaa.00485. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper485. Acesso em: 30 jun. 2024.