S.P. Borgatti and M.G. Everett, A graph-theoretic perspective on centrality, Social Networks 28 (2006), no. 4, 466–484.
 G. Chartrand and L. Lesniak, Graphs & digraphs, Chapman and Hall, CRC, Boca Raton, 2005.
 R.C. Entringer, D.E. Jackson, and D.A. Snyder, Distance in graphs, Czechoslovak Math. J. 26 (1976), no. 2, 283–296.
 M Indhumathy, S Arumugam, V Baths, and T. Singh, Graph theoretic concepts in the study of biological networks, Applied Analysis in Biological and Physical Sciences (Cushing J., Saleem M., Srivastava H., Khan M., and Merajuddin M.,
eds.), Springer Proceedings in Mathematics & Statistics, vol 186. Springer, New Delhi, 2016, pp. 187–200.
 C. Kang, C. Molinaro, S. Kraus, Y. Shavitt, and V.S. Subramaniam, Diffusion centrality in social networks, IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, Istanbul, 2012, pp. 558–564.
 D. Koschützki and F. Schreiber, Comparison of centralities for biological networks, German Conference on Bioinformatics, Gesellschaft für Informatik eV, 2004, pp. 161–174.
 R. Lopez, J. Worrell, H. Wickus, R. Flórez, and D.A. Narayan, Towards a characterization of graphs with distinct betweenness centralities., Australas. J. Comb. 68 (2017), no. 2, 285–303.
 S.K. Raghavan Unnithan, B. Kannan, and M. Jathavedan, Betweenness centrality in some classes of graphs, Int. J. Comb. 2014 (2014), Article ID 241723.
 P. Shannon, A. Markiel, O. Ozier, N.S. Baliga, J.T. Wang, D. Ramage, N. Amin, B. Schwikowski, and T. Ideker, Cytoscape: A software environment for integrated models of biomolecular interaction networks, Genome Res. 13 (2003), no. 11,
 A. Shimbel, Structural parameters of communication networks, The Bulletin of Mathematical Biophysics 15 (1953), no. 4, 501–507.