
https://www.scer.scot/wp-content/uploads/Future-of-Europe-Report-SCER-May-2019.pdf

https://ctxt.es/es/20191113/Firmas/29535/sentencia-del-proces-negociacion-politica-manifiesto-chomsky-catalunya.htm

https://blogs.lse.ac.uk/brexit/2019/06/26/did-we-ever-really-understand-how-the-eu-works/