
http://blogs.lse.ac.uk/brexit/2017/05/24/from-brexit-to-european-renewal-the-fracture-of-the-social-contract-underlays-the-current-turmoil/

https://www.inet.ox.ac.uk/files/Supply-Demand-Shocks-CEPR-Apr-17-2020.pdf

https://theconversation.com/el-lanzamiento-de-penaltis-en-el-futbol-tiene-mas-de-ciencia-que-de-loteria-229154