The paper demonstrates that productivity rests on five elements of the economy: infrastructure, capital, trade, education and aggregate efficiency.
Geography
Link
http://www.oecd.org/dataoecd/37/56/34027373.pdf#search=%22Overcoming%20Barriers%20to%20Competitiveness%20%20Causa%2C%20Orsetta%3B%20Cohen%2C%20Daniel%22