@Inproceedings{ls_leimeister,
  author = {Köbler, F. and Koene, P. and Krcmar, H. and Altmann, M. and Leimeister, J. M.},
  title  = {LocaTag - An NFC-based system enhancing instant messaging tools with real-time user location},

  year   = {2010},
  number = {},
  url    = {http://www.uni-kassel.de/fb7/ibwl/leimeister/pub/JML_156.pdf},

  const  = {\ text}
}
@Article{jaeschke2008tag,
  author = {Jäschke, Robert and Marinho, Leandro and Hotho, Andreas and Schmidt-Thieme, Lars and Stumme, Gerd},
  title  = {Tag Recommendations in Social Bookmarking Systems},
  journal = {AI Communications},
  year   = {2008},
  number = {4},
  url    = {http://dx.doi.org/10.3233/AIC-2008-0438},
  doi = {10.3233/AIC-2008-0438},
  const  = {\ text}
}
@Inproceedings{krause2008antisocialb,
  author = {Krause, Beate and Schmitz, Christoph and Hotho, Andreas and Stumme, Gerd},
  title  = {The Anti-Social Tagger - Detecting Spam in Social Bookmarking Systems},

  year   = {2008},
  number = {},
  url    = {http://airweb.cse.lehigh.edu/2008/submissions/krause_2008_anti_social_tagger.pdf},

  const  = {\ text}
}