https://www.globalwitness.org/documents/20405/Hydrogen_is_too_expensive_-_September_2022.pdf
https://www.philadelphiafed.org/-/media/frbp/assets/community-development/discussion-papers/discussion-paper_automation.pdf
https://www.clingendael.org/sites/default/files/2019-08/Report_US-China_stand-off.pdf
https://www.eca.europa.eu/Lists/ECADocuments/SR22_18/SR_Resilience-EU-inst_EN.pdf