|
RAND Corporation (United States)
28
|
Stockholm Environment Institute (Sweden)
12
|
Center for Strategic and International Studies (United States)
8
|
|
Mathematica Policy Research (United States)
6
|
Centre for Economic Policy Research (United Kingdom)
2
|
Environment for Development Initiative (Sweden)
2
|
|
Urban Institute (United States)
2
|
Brookings Institution (United States)
1
|
Center for American Progress (United States)
1
|
|
International Institute for Environment and Development (United Kingdom)
1
|
Peterson Institute for International Economics (United States)
1
|
