@article{Guimera2003,
title={Self-similar community structure in a network of human interactions},
author={Guimera, R, Danon, L, Diaz-Guilera, A, Giralt, F, Arenas, A},
abstract={We propose a procedure for analyzing and characterizing complex networks. We apply this to the social network as constructed from email communications within a medium sized university with about 1700 employees. Email networks provide an accurate and nonintrusive description of the flow of information within human organizations. Our results reveal the self-organization of the network into a state where the distribution of community sizes is self-similar. This suggests that a universal mechanism, responsible for emergence of scaling in other self-organized complex systems, as, for instance, river networks, could also be the underlying driving force in the formation and evolution of social networks.},
journal={Phys. Rev. E},
volume={68},
doi={10.1103/PhysRevE.68.065103},
year={2003},
month={DEC},
day={1},
pages={art. no. 065103},
}