1. Roadmap for moving to a low-carbon economy in 2050. European Commission (2011), http://ec.europa.eu/clima/policies/roadmap/faq_en.htm.
2. Energy Roadmap 2050, Impact assessment and scenario analysis, European Commission, 15.12.2011 and Öko-Institute/ Wuppertal Institute (2012), compiled from data provided by DG Energy, EC.
3. Tangible ways towards climate protection in the European Union (EU Long-term scenarios 2050), Fraunhofer ISI (2012).
4. Automotive Industry Portal (Website: http://www.marklines.com/en/).
5. Global EV Outlook (2015), (http://www.iea.org/evi/Global-EV-Outlook-2015-Update_1page.pdf).