1. Verkehr umweltverträglicher machen,2021
2. European Commission. Regulation of the European Parliament and of the Council on the deployment of alternative fuels infrastructure, and repealing Directive 2014/94/EU of the European Parliament and of the Council; 2021.
3. BMWi. Nationales Reformprogramm 2020 - Die Nationale Wasserstoffstrategie; 2020.
4. Current status of automotive fuel cells for sustainable transport;Pollet;Curr Opin Electrochem,2019
5. The development of fuel cell electric vehicles – A review;Muthukumar;Mater Today: Proc,2021