1. Environmental assessment of biogas co- or tri-generation units by life cycle analysis methodology;Chevalier;Appl Therm Eng,2005
2. Eurobserv’ER. From website: http://www.energies-renouvelables.org/accueil_observ-er.asp; 2008.
3. European Commission. Energy and climate change: promotion of the use of energy from renewable sources RES-E. COM(2008)0019. 23/01/2008.
4. Energy performances and life cycle assessment of an Italian wind farm;Ardente;Renew Sust Energy Rev,2008
5. CAMELIA Project. Cogeneration and multigeneration of renewable energy systems in buildings: good practice guide 2007. From website: www.camelia-eu.com; 2007.