https://www.ips-journal.eu/topics/economy-and-ecology/a-plea-for-political-economy-7672/
https://www.wto.org/english/res_e/reser_e/ullbergpresentation_e.pdf
https://www.tandfonline.com/doi/epdf/10.1080/10220461.2023.2226108?needAccess=true
https://www.reuters.com/markets/europe/basf-says-european-operations-need-be-cut-size-permanently-2022-10-26/