https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef1729en.pdf
https://internationalepolitik.de/system/files/article_pdfs/IP_05-2020_Kurtz_oB.pdf
https://static1.squarespace.com/static/5adfc952ec4eb743393ebbbd/t/6075a1b4d148dc7bf6173c0f/1618321870456/ForesightGuide2021-JustLabs-Links_compressed+%2814MB%29.pdf