@misc{cohen_coughlin_2003, 
  title={Congestion at Airports: The Economics of Airport Expansions}, 
  DOI={10.3886/icpsr01282}, 
  publisher={Inter-university Consortium for Political and Social Research (ICPSR)}, 
  author={Cohen and Coughlin}, 
  year={2003}, 
  month={Jun}
  }