
https://blogs.lse.ac.uk/brexit/2021/01/11/article-16-of-the-ireland-northern-ireland-protocol-offers-no-quick-fix/

https://theconversation.com/cual-es-el-limite-del-insulto-en-politica-233261

http://bruegel.org/wp-content/uploads/2017/03/WP_2017_03-.pdf