
https://www.esri.ie/system/files/publications/SUSTAT95_0.pdf

http://www.geog.qmul.ac.uk/media/geography/docs/research/working-beyond-the-border/Governing-Labour-Standards.pdf

https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/2020-05-13_etat_des_lieux_du_financement_de_la_protection_sociale.pdf