|
Competitive Enterprise Institute (United States)
140
|
Institute for Energy Research (United States)
11
|
Atlantic Council (United States)
6
|
|
National Bureau of Economic Research (United States)
6
|
Brookings Institution (United States)
2
|
Center for Energy and Environmental Policy Research (United States)
2
|
|
American Enterprise Institute (United States)
1
|
Institute of Energy Economics, Japan (Japan)
1
|
Mathematica Policy Research (United States)
1
|
