1. European Automobile Manufacturers’ Association (ACEA): ACEA Report – Vehicles in use – Europe 2018.
https://www.acea.be/uploads/statistic_documents/ACEA_Report_Vehicles_in_use-Europe_2018.pdf
(2018). Accessed 25 March 2019
2. International Organization of Motor Vehicle Manufacturers (OICA): World Vehicles in Use.
http://www.oica.net/category/vehicles-in-use/
. Accessed 25 March 2019
3. International Organization of Motor Vehicle Manufacturers (OICA): 2018 Production Statistics.
http://www.oica.net/category/production-statistics/2018-statistics/
. Accessed 25 March 2019
4. Irle, R.: Global EV Sales for 2018 – Final Results.
http://www.ev-volumes.com/country/total-world-plug-in-vehicle-volumes/
. Accessed 25 March 2019
5. European Commission: Emissions in the automotive sector.
https://ec.europa.eu/growth/sectors/automotive/environment-protection/emissions_en
. Accessed 25 March 2019