@Article{golder2006structurec,
  author = {Golder, Scott and Huberman, Bernardo A.},
  title  = {The Structure of Collaborative Tagging Systems},
  journal = {Journal of Information Sciences},
  year   = {2006},
  number = {2},
  url    = {http://.hpl.hp.com/research/idl/papers/tags/index.html},

  const  = {\ text}
}