https://www.boeckler.de/pdf/p_wsi_report_52_2019.pdf
http://www.ips-journal.eu/regions/europe/article/show/bound-no-more-2609/
https://www.dni.gov/index.php/global-trends/the-future-summarized
https://op.europa.eu/en/publication-detail/-/publication/d73c833f-c34c-11eb-a925-01aa75ed71a1/language-en