@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{schmitz02accessing,
  author = {Schmitz, C. and Staab, S. and Studer, R. and Stumme, G. and Tane, J.},
  title  = {Accessing Distributed Learning Repositories through a Courseware
    Watchdog},

  year   = {2002},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2002/E-Learn02.pdf},

  const  = {\ text}
}