EPPSTEIN, David; WANG, Joseph. Fast Approximation of Centrality. Journal of Graph Algorithms and Applications, [S. l.], v. 8, n. 1, p. 39–45, 2004. DOI: 10.7155/jgaa.00081. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper81. Acesso em: 30 jun. 2024.