http://bruegel.org/wp-content/uploads/2017/03/WP_2017_03-.pdf
https://g8fip1kplyr33r3krz5b97d1-wpengine.netdna-ssl.com/wp-content/uploads/2018/07/SelmayrSchmidNotetoUKstaffinEUDelegations.signed.pdf
https://eupinions.eu/index.php?id=12463
http://blogactiv.eu/blog/2012/05/15/stumbling-towards-the-brexit/