1. The Century illustrated monthly magazine. Scribner, New York (1871). http://archive.org/details/centuryillustrat07newyuoft
2. BMBF: The National Hydrogen Strategy, 13 January 2023. https://www.bmbf.de/bmbf/de/forschung/energiewende-und-nachhaltiges-wirtschaften/nationale-wasserstoffstrategie/nationale-wasserstoffstrategie
3. Bollerhey, T., Exenberger, M., Geyer, F., Westphal, K.: H2GLOBAL - Idea, Instrument and Intentions, 13 January 2023
4. Noussan, M., Raimondi, P.P., Scita, R., Hafner, M.: The role of green and blue hydrogen in the energy transition - a technological and geopolitical perspective. Sustainability 13(1), 298 (2020)
5. Ma, S., He, Y., Gu, R., Li, S.: Sustainable supply chain management considering technology investments and government intervention. Transp. Res. Part E Logist. Transp. Rev. 149, 102290 (2021)