https://www.congreso.es/public_oficiales/L15/CONG/BOCG/B/BOCG-15-B-32-1.PDF
http://go.carnegieendowment.org/iHTP0VPKETn00o001NP0V0F
https://www.fraserinstitute.org/sites/default/files/populism-majority-rule-and-economic-freedom-ch3.pdf
https://ukandeu.ac.uk/what-the-dutch-elections-tell-us-about-democracy-in-the-eu/?mc_cid=e0f7950591&mc_eid=815b1928ec