@incollection{KaimannBroescherTrimbornetal.2014,
  author    = {Andrea Kaimann and J{\"o}rg Br{\"o}scher and Klaus Trimborn and Ralph Angermund},
  title     = {zdi - Zukunft durch Innovation.NRW},
  isbn      = {978-3-8329-6698-0},
  year      = {2014},
}