@proceedings{Johannsen.1993,,
  title = {Proceedings of the XII. European Annual Conference on Human Decision Making and Manual Control: Held at the University of Kassel Kassel Germany June 22 - 24 1993: 22,-24, Juni 1993},
  publisher = {University of Kassel},
  year = {1993},
  volume = {12 (Kassel)}
}

@article{Borys.1987,
  author = {Borys, Bernd-Burkhard and Johannsen, Gunnar and Hansel, Hans-G. and Schmidt, Joachim},
  title = {Task and Knowledge Analysis in Coal-Fired Power Plants},
  journal = {IEEE Control Systems Magazine},
  year = {1987},
  volume = {7},
  number = {3},
  pages = {26--30}
}

@book{Borys.1986,
  author = {Borys, Bernd-Burkhard and Johannsen, Gunnar and Hansel, Hans-G. and Schmidt, Joachim},
  title = {Task and knowledge analysis : Methodology and application in power plants},
  publisher = {Laboratory for Man-Machine-Systems},
  year = {1986},
  volume = {2}
}