@Inproceedings{yolum2003self,
  author = {Yolum, PInar and Singh, Munindar P.},
  title  = {Self-Organizing Referral Networks: A Process View of
                  Trust and Authority},

  year   = {2003},
  number = {},
  url    = {http://www.co.umist.ac.uk/~mcaihak2/esoa-cfp.html},

  const  = {\ text}
}
@Article{ebel2002scalefree,
  author = {Ebel, Holger and Mielsch, Lutz-Ingo and Bornholdt, Stefan},
  title  = {Scale-free topology of e-mail networks},
  journal = {Physical Review E},
  year   = {2002},
  number = {},
  url    = {http://www.citebase.org/cgi-bin/citations?id=oai:arXiv.org:cond-mat/0201476},

  const  = {\ text}
}
@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},
  number = {8},
  url    = {},

  const  = {\ text}
}
@Inproceedings{zhang2002using,
  author = {Zhang, Hui and Goel, Ashish and Govindan, Ramesh},
  title  = {Using the Small-World Model to Improve Freenet
                  Performance},

  year   = {2002},
  number = {},
  url    = {},

  const  = {\ text}
}
@Book{watts1999small,
  author = {Watts, Duncan J.},
  title  = {Small Worlds -- The Dynamics of Networks between
                  Order and Randomneess},

  year   = {1999},
  number = {},
  url    = {},

  const  = {\ text}
}