http://europa.eu/rapid/press-release_MEMO-17-2001_en.htm
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/638135/6.3703_DEXEU_Northern_Ireland_and_Ireland_INTERACTIVE.pdf
https://www.socialeurope.eu/2017/07/road-soft-brexit/
http://europa.eu/rapid/press-release_IP-18-463_en.htm