1. Emissions - the ‘business as usual’ story is misleading;Hausfather;Nature,2020
2. Global EV Outlook 2020 Available online: https://www.iea.org/reports/global-ev-outlook-2020 (accessed on 17 January 2021).
3. Methanol and the alternate fuel economy;Agarwal,2019
4. Clean rail transportation options;Dincer,2015
5. CRRC Tangshan trials new hydrogen-fuelled tram 2018. Available online: https://www.railjournal.com/passenger/light-rail/crrc-tangshan-trials-new-hydrogen-fuelled-tram/ (accessed on 10 February 2021).