@book{xie_capannelli_shah_wang_2004, 
  title={Phasing out Polluting Motorcycles in Bangkok: Policy Design by Using Contingent Valuation Surveys}, 
  DOI={10.1596/1813-9450-3402}, 
  publisher={The World Bank}, 
  author={Xie and Capannelli and Shah and Wang}, 
  year={2004}, 
  month={Sep}
  }