1. Indicators for 201http://www.iea.org/statistics/statisticssearch/report/?country=ITALY&product=indicators&year=201
2. Energy Roadmap 2050,2011
3. Directive 2009/28/EC of the European Parliament and of the Council of 23 April 2009—On the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC;Off. J. Eur. Union,2009
4. 15th Annual Overview Barometerhttp://www.eurobserv-er.org/15th-annual-overview-barometer/
5. Bacini Energetici Urbani, Risparmio Energetico e Fonti Energetiche Rinnovabili (Volume II)http://www.comune.bologna.it/media/files/pec_volume_2.pdf