http://www.ilo.org/global/publications/books/WCMS_605078/lang–en/index.htm
https://corporateeurope.org/revolving-doors/2016/08/barroso-gold-plated-revolving-door
https://www.politico.eu/article/germany-9-euro-ticket-train-public-transport/?utm_source=POLITICO.EU&utm_campaign=41557aa1fc-EMAIL_CAMPAIGN_2022_10_14_11_29&utm_medium=email&utm_term=0_10959edeb5-41557aa1fc-190380769
https://www.oecd.org/corruption/anti-bribery/Switzerland-Phase-4-Report-ENG.pdf