@Inproceedings{tane04semantic,
  author = {Tane, Julien and Schmitz, Christoph and Stumme, Gerd},
  title  = {Semantic resource management for the web: an e-learning application},

  year   = {2004},
  number = {},
  url    = {http://www.www2004.org/proceedings/docs/2p1.pdf},

  const  = {\ text}
}
@Inproceedings{tane03courseware,
  author = {Tane, Julien and Schmitz, Christoph and Stumme, Gerd and Staab, Steffen and Studer, R.},
  title  = {The Courseware Watchdog:  an Ontology-based tool for finding and organizing
                  learning material},

  year   = {2003},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2003/tane2003courseware.pdf},

  const  = {\ text}
}
@Article{stumme02elearning,
  author = {Stumme, G.},
  title  = {E-Learning: vom Nürnberger Trichter zum weltweiten Netz},
  journal = {Karlsruher Transfer},
  year   = {2002},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2002/KarlsruherTransfer02.pdf},

  const  = {\ text}
}