@book{Curth.1989,
  address = {Bergisch Gladbach},
  author = {Curth, Michael and Seibt, Dietrich},
  interhash = {a32184e1f4381c11f686437dcf50ce23},
  intrahash = {548076b3063275286fd6eda35649a5ed},
  isbn = {3890121772},
  publisher = {Eul},
  series = {Reihe},
  title = {Planspieltechnik und Computer Based Training zur Schulung von Einkäufern im Handel},
  volume = 31,
  year = 1989
}

@book{Schenkel.2000,
  address = {Nürnberg},
  author = {Schenkel, Peter},
  interhash = {f4350063e90c4a34a993b3697008a6b4},
  intrahash = {9a1dddb224eb289d064c11a63539aaeb},
  isbn = {3821470208},
  price = {DM 58.00, EUR-D 29.00, sfr 52.50, S 423.00},
  publisher = {BW Bildung und Wiss. Verl. und Software},
  series = {Multimediales Lernen in der Berufsbildung},
  title = {Qualitätsbeurteilung multimedialer Lern- und Informationssysteme:  Evaluationsmethoden auf dem Prüfstand},
  year = 2000
}