Flyvbjerg, Bent. 2005. “Policy and Planning for Large Infrastructure Projects: Problems, Causes, and Cures.” World Bank Policy Research Working Paper 3781. Washington, DC: World Bank.
"Key References: Infrastructure Challenges and How PPPs Can Help - Problems with Infrastructure"
Summarizes the results and lessons from the above studies, and other similar work—why estimates of costs and benefits are inaccurate for large infrastructure projects.