@Inproceedings{hotho2006trend,
  author = {Hotho, Andreas and Jäschke, Robert and Schmitz, Christoph and Stumme, Gerd},
  title  = {Trend Detection in Folksonomies},

  year   = {2006},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006trend.pdf},

  const  = {\ text}
}
@Inproceedings{jaeschke2006wege,
  author = {Jäschke, Robert and Hotho, Andreas and Schmitz, Christoph and Stumme, Gerd},
  title  = {Wege zur Entdeckung von Communities in Folksonomies},

  year   = {2006},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/jaeschke2006wege.pdf},

  const  = {\ text}
}