|
International Institute for Environment and Development (United Kingdom)
25
|
National Bureau of Economic Research (United States)
21
|
Centre for Economic Policy Research (United Kingdom)
12
|
|
RAND Corporation (United States)
9
|
Brookings Institution (United States)
7
|
Carnegie Endowment for International Peace (United States)
5
|
|
Center for American Progress (United States)
5
|
Mathematica Policy Research (United States)
4
|
Science Policy Research Unit (United Kingdom)
3
|
|
German Development Institute (Germany)
2
|
International Institute for Strategic Studies (United Kingdom)
1
|
Urban Institute (United States)
1
|
