@inproceedings{yolum2003self,
  author = {Yolum, PInar and Singh, Munindar P.},
  title = {Self-Organizing Referral Networks: A Process View of
                  Trust and Authority},
  booktitle = {Engineering Self-Organising Applications, First},
  year = {2003},
  pages = {11--19},
  url = {http://www.co.umist.ac.uk/~mcaihak2/esoa-cfp.html}
}

@article{pennock2002winners,
  author = {Pennock, David and Flake, Gary and Lawrence, Steve and Glover, Eric and Giles, C. Lee},
  title = {Winners don't take all: Characterizing the
                  competition for links on the web},
  journal = {Proc.\ National Academy of Sciences},
  year = {2002},
  volume = {99},
  number = {8},
  pages = {5207--5211}
}

@inproceedings{zhang2002using,
  author = {Zhang, Hui and Goel, Ashish and Govindan, Ramesh},
  title = {Using the Small-World Model to Improve Freenet
                  Performance},
  booktitle = {Proc.\ 21st Annual Joint Conference of the IEEE},
  year = {2002}
}

@book{watts1999small,
  author = {Watts, Duncan J.},
  title = {Small Worlds -- The Dynamics of Networks between
                  Order and Randomneess},
  publisher = {Princeton University Press},
  year = {1999}
}