
https://www.icij.org/investigations/paradise-papers/fairer-transparent-tax-system-will-lost-vested-interests-without-public-pressure-warns-eu-tax-commissioner/

https://www.boeckler.de/pdf/p_imk_study_58_2018.pdf

https://www.socialeurope.eu/2017/05/irelands-brexit-borders-possible-solution/