|
National Bureau of Economic Research (United States)
4
|
Centro Euro-Mediterraneo sui Cambiamenti Climatici (Italy)
3
|
American Enterprise Institute (United States)
2
|
|
Center for Education Policy Research (United States)
1
|
Center for Environmental Research (Germany)
1
|
Potsdam Institute for Climate Impact Research (Germany)
1
|
|
RAND Corporation (United States)
1
|
