https://www.boeckler.de/pdf/p_imk_report_141e_2018.pdf
http://visegradinsight.eu/app/uploads/2019/11/EaP-2030-Trends.pdf
https://www.etui.org/sites/default/files/2020-12/Social%20policy%20in%20the%20European%20Union%20state%20of%20play%202020-web.pdf
https://trade.ec.europa.eu/doclib/docs/2021/july/tradoc_159709.pdf