@book{BreyerCzechHeinetal.1997,
  author    = {Breyer, Herbert and Czech, Olaf and Hein, Christian and Kussmann, Michael and Lehmke, Johannes and Osenberg, Hans and Schulte, Hans and Traebert, Wolf and Wolffgramm, Horst},
  title     = {Empfehlungen des VDI f{\"u}r das Studium des Lehramtes Technik in der gymasialen Oberstufe},
  publisher = {Verein Dt. Ingenieure},
  address   = {D{\"u}sseldorf},
  pages     = {30 S.},
  year      = {1997},
  language  = {de}
}
@article{BreyerCzechHeinetal.1997,
  author    = {Breyer, Herbert and Czech, Olaf and Hein, Christian and Kussmann, Michael and Lehmke, Johannes and Osenberg, Hans and Schulte, Hans and Traebert, Wolf and Wolffgramm, Horst and Meier, Bernd},
  title     = {Aufgaben und Ziele des Studiums und Studiengebiet Fachdidaktik Technik},
  year      = {1997},
  language  = {de}
}