|
Urban Institute (United States)
161
|
International Institute for Applied Systems Analysis (Austria)
50
|
National Bureau of Economic Research (United States)
40
|
|
Centre for Economic Policy Research (United Kingdom)
25
|
World Resources Institute (United States)
11
|
Brookings Institution (United States)
8
|
|
Environment for Development Initiative (Sweden)
4
|
Center for Climate and Energy Solutions (United States)
3
|
Resources for the Future (United States)
3
|
|
Center for Development Research (Germany)
2
|
Centro Euro-Mediterraneo sui Cambiamenti Climatici (Italy)
2
|
Earth Institute (United States)
2
|
|
Fondazione Eni Enrico Mattei (Italy)
2
|
International Institute for Environment and Development (United Kingdom)
2
|
Mathematica Policy Research (United States)
2
|
|
American Enterprise Institute (United States)
1
|
Carnegie Endowment for International Peace (United States)
1
|
Center for Education Policy Analysis (United States)
1
|
|
Overseas Development Institute (United Kingdom)
1
|
The Green Political Foundation (Germany)
1
|
