@article{diehl_berlin_berlin_2015, 
  title={Reviewing concepts on durable relationships for an improved impact assessment in the European Union}, 
  DOI={10.17169/refubium-22543}, 
  publisher={Freie Universität Berlin}, 
  author={Diehl, Katharina and Berlin and Berlin}, 
  year={2015}, 
  month={May}
  }