<1> Michael Burnett, Public-Private Partnerships (PPP) - A Decision Maker's Guide,
Institut Européen d'Administration Publique (2007), ISBN -978-92-9203-001-8.

Chapter 6 (pages 150-165) develops a detailed operational approach to PPP
audits.

<2> Resource Book on PPP Case Studies,
Directorate-General of Regional Policy, European Commission (June 2004).

Example of PPP
review in the EU using case studies. http://ec.europa.eu/regional policy/sources/docgener/guides/pppguide.htm

<3> Case Studies of Transportation Public-Private-Partnerships in the United States,
US Department of Transportation (July 2007).

An example of PPP
review in the transport sector using case studies in the US and other countries.
www.fhwa.dot.gov/ppp/pdf/us ppp_case studies final report 7-7-07.pdf