@Incollection{berendt04usage,
  author = {Berendt, Bettina and Hotho, Andreas and Stumme, Gerd},
  title  = {Usage Mining for and on the Semantic Web},

  year   = {2004},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2004/berendt04usage.pdf},

  const  = {\ text}
}
@Incollection{berendt04usage,
  author = {Berendt, Bettina and Hotho, Andreas and Stumme, Gerd},
  title  = {Usage Mining for and on the Semantic Web},

  year   = {2004},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2004/berendt04usage.pdf},

  const  = {\ text}
}