The importance of centralities in dark network value chainsNoemi Toth, László Gulyás, Richard O. Legendi, Paul Duijn, Peter M.A. Sloot and George KampisEur. Phys. J. Special Topics, 222 6 (2013) 1413-1439DOI: https://doi.org/10.1140/epjst/e2013-01935-7