@article{schäfer_werwatz_zimmermann_2004, 
  title={The Determinants of Debt and (Private) Equity Financing: The Case of Young, Innovative SMEs from Germany}, 
  volume={11}, 
  DOI={10.1080/1366271042000265393}, 
  publisher={Informa UK Limited}, 
  author={Schäfer and Werwatz and Zimmermann}, 
  year={2004}
  }