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Agenzia Energia e Ambiente di Torino, 2009, ALL EN AMB REG ED CI
[2]
[Anonymous], 2011, Communication From the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions "A Roadmap for Moving to a Competitive Low Carbon Economy in 2050"
[4]
European Committee for Standardization (CEN), 2007, 154592007 CEN ISO