1. EUROSTAT. Introduction to NUTS and statistical regions: basic principles of the NUTS; 2008.
2. Commission of the European Communities. EU-25 energy and transport outlook to 2030 (part IV). Directorate-General Energy and Transport; 2006.
3. Commission of the European Communities. Communication from the commission – an EU strategy for biofuels {SEC(2006) 142}; 2006.
4. EEA. How much bioenergy can Europe produce without harming the environment? European Environment Agency; 2006. 67 p.
5. Assessment of the potential biomass supply in Europe using a resource-focused approach;Ericsson;Biomass and Bioenergy,2006