https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef1663en.pdf
https://www.boeckler.de/data/downloads/IMK/FMM%20Konferenz%202023/v_2023_10_20_goekten.pdf
https://euagenda.eu/upload/publications/untitled-111339-ea.pdf