1. European Commission. A Hydrogen Strategy for a Climate-Neutral Europe [Internet]. Available: https://www.h2greentech.eu/a-hydrogen-strategy-for-a-climate-neutral-europe/
2. Ministry of Environment. South Korea to Move towards the Goal of Carbon Neutrality by 2050 [Internet]. Available: https://eng.me.go.kr/eng/web/main.do.
3. D. Y. Choi, Y. J. Jeon, M. S. Choi, Y. J. Seo, S. K. Park, M. H. Park, ... and H. N. Jeong, 2020 Energy Consumption Survey, Ministry of Trade, Industry and Energy, Sejong, pp. 92-93, March 2022.
4. S. McQueen, J. Stanford, S. Satyapal, E. Miller, N. Stetson, D. Papageorgopoulos, ... and R. Costa, Department of Energy Hydrogen Program Plan, U.S. Department of Energy, Washington: DC, DOE/EE-2128, November 2020.
5. European Commision. Hydrogen Mobility Erurope 2 [Internet]. Available: https://cordis.europa.eu/project/id/700350/results.