http://trade.ec.europa.eu/doclib/docs/2018/october/tradoc_157468.pdf
https://www.tandfonline.com/doi/epdf/10.1080/10220461.2023.2226108?needAccess=true
https://institute.global/news/customs-and-exiting-european-union
https://www.aspistrategist.org.au/the-contradictions-holding-germany-back/?utm_source=newsletter&utm_medium=email&utm_campaign=24%2F11%2F2022++