@book{BuchholzBachEichler2003,
  author    = {Wolfgang Buchholz and Norbert Bach and Bernd Eichler},
  title     = {Gesch{\"a}ftsmodelle f{\"u}r Wertsch{\"o}pfungsnetzwerke},
  edition   = {1. Auflage},
  isbn      = {3-409-12315-6},
  year      = {2003},
}