@book{Pyrtek.1990,
  address = {Bergisch Gladbach},
  author = {Pyrtek, Volker},
  interhash = {55e5ca45fed601fa87c94cd1d515e612},
  intrahash = {c92109d0935d4f635759c5a9b9b6a963},
  isbn = {3890121861},
  publisher = {Eul},
  series = {Reihe},
  title = {Ein Dialogsystem zur Planung und Steuerung innovativer verfahrenstechnischer Projekte},
  volume = 33,
  year = 1990
}

@book{Jenny.2001,
  address = {Zürich},
  author = {Jenny, Bruno},
  edition = {5., unveränd. Aufl.},
  interhash = {02e0fee94ace5ca5d4e27ade61d10cdc},
  intrahash = {1c2e65fa926f8a67f1fd304282560fc6},
  isbn = {3728127914},
  price = {DM 99.80, sfr 78.00, S 730.00},
  publisher = {vdf Hochsch.-Verl. an der ETH},
  series = {Wirtschaftsinformatik},
  title = {Projektmanagement in der Wirtschaftsinformatik},
  year = 2001
}