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  author = {Krause, Beate and Lerch, Hana and Hotho, Andreas and Roßnagel, Alexander and Stumme, Gerd},
  title  = {Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy},
  journal = {Informatik-Spektrum},
  year   = {2012},
  number = {1},
  url    = {http://dx.doi.org/10.1007/s00287-010-0485-8},
  doi = {10.1007/s00287-010-0485-8},
  const  = {\ text}
}
@Article{noKey,
  author = {Krause, Beate and Lerch, Hana and Hotho, Andreas and Roßnagel, Alexander and Stumme, Gerd},
  title  = {Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy},
  journal = {Informatik-Spektrum},
  year   = {2012},
  number = {1},
  url    = {http://dx.doi.org/10.1007/s00287-010-0485-8},
  doi = {10.1007/s00287-010-0485-8},
  const  = {\ text}
}