https://ecfr.eu/wp-content/uploads/2023/05/The-Power-of-Control-How-the-EU-can-shape-the-new-era-of-strategic-export-restrictions.pdf
https://ukandeu.ac.uk/the-swiss-approach-to-trade-with-the-eu/?mc_cid=f98b87bf43&mc_eid=815b1928ec
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/899991/200713_BPDG_-_Border_Operating_Model_FINAL_1320_edit.pdf