https://www.wto.org/english/res_e/booksp_e/00_wtr19_e.pdf
https://www.tandfonline.com/doi/epdf/10.1080/13501763.2023.2236654
https://www.economiesuisse.ch/de/artikel/faktencheck-bilaterale-iii
https://www.ost-ausschuss.de/sites/default/files/pm_pdf/2023%2012%2006%20_%20Position%20concerning%20blockade%20on%20EU-UA%20border_final.pdf