
http://www.guengl.eu/uploads/news-documents/Working_paper_Border_controls_on_cross_border_trade_in_goods.pdf

https://geopolitique.eu/en/2024/04/16/radical-change-is-what-is-needed/

https://wiiw.ac.at/austria-s-economic-relations-with-the-eu-eastern-partnership-countries-and-russia-dlp-6925.pdf