1. European Commission – Eurostat, Key figures on Europe 2007/0, European Communities, 2008.
2. Eurostat, EU Energy in Figures 2010 – Greenhouse Gas Emissions by Sector, European Communities, 2010.
3. EEA – European Environmental Agency, Annual European Union greenhouse gas inventory 1990–2008 and inventory report 2010, Copenhagen, 2010.
4. EEA – European Environmental Agency, Energy and environment report 2008, Copenhagen, 2008.
5. International Energy Agency, Energy Policies of IEA Countries – Greece 2006 Review – 2006 Country Review, 2006.