@book{JanzGoedhuysMohnen2008,
  author    = {Janz, Norbert and Goedhuys, Micheline and Mohnen, Pierre},
  title     = {Knowledge-based productivity in "low-tech" industries : evidence from firms in developing countries / Goedhuys, Micheline ; Janz, Norbert ; Mohnen, Pierre},
  publisher = {UNU-MERIT},
  address   = {Maastricht},
  pages     = {34 S.},
  year      = {2008},
  language  = {en}
}
@book{HoepnerJanzSiersetal.2008,
  author    = {Hoepner, Gert and Janz, Norbert and Siers, Carsten and Honert, Matthias},
  title     = {Zukunftsstudie Vertriebsnavigator / durchgef{\"u}hrt von der Fachhochschule Aachen und Axantos sales consultancy GmbH},
  publisher = {Axantos sales consultancy GmbH},
  address   = {D{\"u}sseldorf},
  pages     = {25 Bl. : graph. Darst.},
  year      = {2008},
  language  = {de}
}
@book{HoepnerJanzSiersetal.2008,
  author    = {Hoepner, Gert and Janz, Norbert and Siers, Carsten and Honert, Matthias},
  title     = {Zukunfts- und Benchmarkstudie Vertriebsnavigator / durchgef{\"u}hrt von der Fachhochschule Aachen und Axantos sales consultancy GmbH},
  publisher = {Axantos sales consultancy GmbH},
  address   = {D{\"u}sseldorf},
  pages     = {28 Bl. : graph. Darst.},
  year      = {2008},
  language  = {de}
}