US The Shift in Private Sector Union Participation: Explanation and Effects

https://www.resolutionfoundation.org/publications/what-happens-after-the-clapping-finishes/

Tilis April 26, 2020

http://www.ilo.org/wcmsp5/groups/public/—dgreports/—cabinet/documents/genericdocument/wcms_371208.pdf

Tilis May 19, 2017

http://www.inegalites.fr/spip.php?page=analyse&id_article=2289&id_rubrique=64&id_mot=30&id_groupe=9

Tilis June 9, 2017