
https://ec.europa.eu/commission/sites/beta-political/files/communication-credible-enlargement-perspective-western-balkans_en.pdf

https://progressivepost.eu/wp-content/uploads/PP14-07NEW-RECAP-28-09-2020_2.pdf

https://www.goldmansachs.com/pdfs/insights/pages/gs-research/the-path-to-2075-slower-global-growth-but-convergence-remains-intact/report.pdf