
https://wiiw.ac.at/can-multinationals-withstand-growing-trade-barriers-dlp-6732.pdf

https://ec.europa.eu/commission/sites/beta-political/files/customs_controls_0.pdf

https://blogs.lse.ac.uk/europpblog/2022/10/10/understanding-the-role-of-joint-bodies-in-eu-external-relations/