1. Endogenous Technical Change in Environmental Macroeconomics;Carraro;Resource and Energy Economics,2003
2. Energy Information Administration. 2004. http://www.eia.doe.gov/.
3. Gerlagh, R. âA Climate-Change Policy Induced Shift from Innovations in Energy Production to Energy Savings.â Working Papers no. 2004.128, Fondazione Eni Enrico Mattei, 2004.