|
RAND Corporation (United States)
30
|
Pembina Institute (Canada)
29
|
Centre for Economic Policy Research (United Kingdom)
21
|
|
Center for Strategic and International Studies (United States)
18
|
Mathematica Policy Research (United States)
18
|
Atlantic Council (United States)
17
|
|
National Bureau of Economic Research (United States)
14
|
Urban Institute (United States)
13
|
American Enterprise Institute (United States)
6
|
|
Brookings Institution (United States)
6
|
Fraser Institute (Canada)
6
|
Overseas Development Institute (United Kingdom)
5
|
|
Science Policy Research Unit (United Kingdom)
3
|
Centre for Energy Policy and Economics (Switzerland)
1
|
Chatham House (United Kingdom)
1
|
|
Ecologic Institute (Germany)
1
|
Energy Policy Research Group (United Kingdom)
1
|
German Development Institute (Germany)
1
|
|
Resources for the Future (United States)
1
|
Stockholm Environment Institute (Sweden)
1
|
