Dobbs, Richard, Herbert Pohl, Diaan-Yi Lin, Jan Mischke, Nicklas Garemo, Jimmy Hexter, Stefan Matzinger, Robert Palter, and Rushad Nanavatty.2013. Infrastructure productivity: How to save $1 trillion a year. New York: McKinsey Global Institute.
"Key References: What is a PPP?"
Describes the deficit in infrastructure investments, and makes the case for improved project selection/management as well as more efficient usage of existing infrastructure.