@inbook{panhuys_brinkhorst_maas_boomkamp_1968, 
  title={Organisation for Economic Co-Operation and Development}, 
  DOI={10.1007/978-1-4899-6477-9_25}, 
  publisher={Springer US}, 
  author={Panhuys and Brinkhorst and Maas and Boomkamp}, 
  year={1968}
  }