@Inproceedings{hotho2006information,
  author = {Hotho, Andreas and Jäschke, Robert and Schmitz, Christoph and Stumme, Gerd},
  title  = {Information Retrieval in Folksonomies: Search and Ranking},

  year   = {2006},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/hotho/pub/2006/seach2006hotho_eswc.pdf},

  const  = {\ text}
}