@inbook{rothgang_schmid_wendt_2010, 
  title={The Self-Regulatory German Healthcare System Between Growing Competition and State Hierarchy}, 
  DOI={10.1057/9780230292345_6}, 
  publisher={Palgrave Macmillan UK}, 
  author={Rothgang and Schmid and Wendt}, 
  year={2010}
  }