https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/15/15.pdf
https://www.sussex.ac.uk/webteam/gateway/file.php?name=foodbrexitreport-langmillstonemarsden-july2017pdf.pdf&site=25
https://www.irishtimes.com/opinion/editorial/the-irish-times-view-on-brexit-day-britain-s-great-leap-backwards-1.4156666
https://dgap.org/de/forschung/publikationen/europa-braucht-eine-bessere-geooekonomische-strategie