
http://www.ilo.org/wcmsp5/groups/public/—dgreports/—dcomm/—publ/documents/publication/wcms_490959.pdf

https://blogs.lse.ac.uk/europpblog/2021/10/28/what-explains-the-fragmentation-of-the-german-party-system/

https://www.socialeurope.eu/europes-perilous-path-its-a-rush-before-the-crash