• FHWA PPP web page, http://www.fhwa.dot.gov/ppp/%20dulles.htm
• Innovative Finance for Surface Transportation (AASHTO), http://www.innovativefinance.org/projects/highways/dulles.asp
• USC Keston Institute for Public Finance and Infrastructure Policy, "Protecting the Public Interest: The Role of Long-Term Concession Agreements for Providing Transportation Infrastructure," http://www.usc.edu/schools/sppd/keston/research/index.html