World Bank and University of Groningen Knowledge BriefA comparison of different sources of purchasing power parity (PPPs) estimates
Statistical Journal of the International Association for Official Statistics
From local prices to the global economy: a unique global collaboration that underpins the International Comparison Program (September 2022)
Lessons learned about global statistical initiatives from the International Comparison Program (2008)
National Bureau of Economic Research
Financial Times
Petersen Institute for International Economics