I. Drozd, “The European Union in the face of social exclusion - an example of intervention by the European Social Fund”, FeR, vol. 34, no. 2, pp. 542–572, Jun. 2018, Accessed: Aug. 25, 2025. [Online]. Available: https://fidesetratio.com.pl/ojs/index.php/FetR/article/view/573