1. Bennett, R., & Vijaygopal, R. (2018). An assessment of UK drivers’ attitudes regarding the forthcoming ban on the sale of petrol and diesel vehicles. Transportation Research Part D, 62, 330–344.
2. Bershidsky, L. (2018, February 28). The end of diesel is here: Germany isn’t ready. Bloomberg View. Available at https://www.bloomberg.com/view/articles/2018-02-28/germany-s-diesel-decision-bans-are-allowed-but-are-they-wise . Retrieved 28 March 2018.
3. Bloomberg. (2018). Baltic Dry Index (BDIY: IND). Available at https://www.bloomberg.com/quote/BDIY:IND . Retrieved 27 March 2018.
4. Boston, W. (2018, February 28). Diesel takes hit in German court—In blow to car makers, ruling clears way for cities to ban certain vehicles to cut pollution. Wall Street Journal.
5. European Union. (2018). Eurostat database. Transport. Available at http://ec.europa.eu/eurostat/web/transport/data/database . Retrieved 26 February 2018.