http://www.etui.org/Publications2/Books/Innovative-union-practices-in-Central-Eastern-Europe
https://www.bruegel.org/sites/default/files/2024-03/PB%2005%202024_2.pdf
https://ukandeu.ac.uk/wp-content/uploads/2020/06/Mind-the-values-gap.pdf
https://www.swp-berlin.org/publications/products/arbeitspapiere/WP_03-2021_EPIN-Report_CoFoE_01.pdf