https://verfassungsblog.de/constitutional-dullness/
https://theconversation.com/y-si-en-las-elecciones-generales-contaramos-los-votos-como-los-suecos-216234
http://muse.jhu.edu/article/683632/pdf
https://www.socialeurope.eu/the-shadow-of-austerity-and-authoritarianism