1. European Commission, A Roadmap for moving to a competitive low carbon economy in 2050, COM (2011) 112, Brussels, 2011.
2. Buildings Performance Institute Europe (BPIE), Europe’s Buildings under the Microscope, 2011.
3. Energy retrofit of historic and existing buildings;Mazzarella;The legislative and regulatory point of view, Energ Buildings,2015
4. Energy and economic analysis and feasibility of retrofit actions in Italian residential historical buildings;Ciulla;Energ Buildings,2016
5. United Nations, General Assembly 28 November 2015, 7th session, Second Committee, Agenda item 20, Sustainable development, Available at: http://www.un.org/ga/search/view_doc.asp?symbol=A/C.2/70/L.5/Rev.1, Last access: January 2017.