https://www.ajot.com/news/the-brexit-checklist-where-the-u.k.-and-eu-currently-stand
https://www.socialeurope.eu/2017/06/answer-wages-not-capital/
http://www.cesifo-group.de/ifoHome/publications/working-papers/CESifoWP/CESifoWPdetails?wp_num=6460&CESifoWP.search=+