1. G. Fontaras, N.-G. Zacharof, and B. Ciuffo, Prog. Energy Combust. Sci. 60, 97 (2017).
2. STATISTA International Car Sales 1990–2018 Statistic,
https://www.statista.com/statistics/200002/international-car-sales-since-1990/
. Accessed 30 July 2018.
3. G.B. Hamra, F. Laden, A.J. Cohen, O. Raaschou-Nielsen, M. Brauer, and D. Loomis, Environ. Health Perspect. 123, 1107 (2015).
4. F. An, R. Earley, and L. Green-Weiskel, Global overview on fuel efficiency and motor vehicle emission standards: policy options and perspectives for international cooperation. (United Nations, Department of Economic and Social Affairs, Commission on Sustainable Development Nineteenth Session New York, 2–13 May 2011. Background paper, No. 3, CSD19/2011/BP3),
http://graenaorkan.is.w7.nethonnun.is/wp-content/uploads/2011/10/Background-paper3-transport1.pdf
. Accessed 30 July 2018.
5. M. Hatami, D. Ganji, and M. Gorji-Bandpy, Renew. Sustain. Energy Rev. 37, 168 (2014).