1. School of Economics, Nankai University, Tianjin, P.R. China
2. Center for Transnationals’ Studies of Nankai University, Tianjin, P.R. China
3. School of Management and Economics, Beijing Institute of Technology, Beijing, P.R. China
4. Center for Energy and Environmental Policy Research, Beijing Institute of Technology, Beijing, P.R. China
5. Sustainable Development Research Institute for Economy and Society of Beijing, Beijing, P.R. China
6. Beijing Key Lab of Energy Economics and Environmental Management, Beijing, P.R. China
7. Yangtze Delta Region Academy of Beijing Institute of Technology, Jiaxing, P.R. China