
https://www.eppgroup.eu/newsroom/news/epp-group-warns-against-britain-becoming-tax-haven

https://www.economiesuisse.ch/de/artikel/faktencheck-bilaterale-iii

https://home.kpmg.com/content/dam/kpmg/nl/pdf/2018/sector/overheid/impact-van-non-tarifaire-handelsbelemmeringen-als-gevolg-van-brexit.pdf