http://www.theglobalipcenter.com/wp-content/uploads/2018/02/GIPC_IP_Index_2018.pdf
http://www.case-research.eu/files/?id_plik=5223
https://socialeurope.eu/no-more-delays-on-eu-corporate-responsibility
https://www.ips-journal.eu/topics/european-integration/europes-south-on-the-path-to-recovery-5241/?utm_campaign=en_903_20210615&utm_medium=email&utm_source=newsletter