| 1 (1) | National Bureau of Economic Research | USA |  |
| 2 (11) | Institut Zur Zukunft der Arbeit | DEU | |
| 3 (17) | CESifo Group | DEU | |
| 4 (18) | Centre for Economic Policy Research | GBR | |
| 5 (79) | International Monetary Fund | USA | |
| 6 (134) | International Food Policy Research Institute United States | USA | |
| 7 (269) | Barcelona School of Economics | ESP | |
| 8 (391) | Organisation for Economic Co-operation and Development | FRA | |
| 9 (423) | UNU Maastricht Economic and Social Research Institute on Innovation and Technology | NLD | |
| 10 (500) | Food and Agriculture Organisation of the United Nations, Italy | ITA | |
| 11 (879) | Santa Fe Institute | USA | |
| 12 (1088) | Rede de Quimica e Tecnologia | PRT | |
| 13 (1138) | RAND Corp | USA | |
| 14 (1473) | Institute for Systems and Computer Engineering, Technology and Science | PRT | |
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