https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef1708en.pdf
http://blog.arbeit-wirtschaft.at/mindestlohn-zufriedenere-beschaeftigte/
https://www.socialeurope.eu/social-dialogue-in-central-and-eastern-europe
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef18037en.pdf