
https://wiiw.ac.at/still-in-the-fast-lane-how-can-eu-cee-get-its-groove-back-dlp-6997.pdf

https://blogs.lse.ac.uk/europpblog/2021/10/22/de-facto-differentiation-in-action-why-poland-will-stay-in-the-eu-with-or-without-the-blessing-of-brussels/

https://wiiw.ac.at/turkey-s-geo-economic-shift-an-opportunity-to-revitalise-eu-integration-amid-sanctions-dlp-7097.pdf