
https://www.etuc.org/fr/presse/rien-quen-2017-chaque-travailleur-subi-une-perte-de-salaire-de-1764-€-en-raison-de-la#.WqrAWUxuI2x

https://www.socialeurope.eu/2017/06/trade-unions-and-the-decline-of-social-democracy/

https://wiiw.ac.at/the-labour-market-entry-and-integration-of-refugees-and-other-migrants-in-austria-dlp-6700.pdf