https://www.opendemocracy.net/democraciaabierta/bernardo-guti-rrez/madrid-un-laboratorio-democr-tico
https://www.esri.ie/system/files/publications/RS170.pdf
http://www.cer.org.uk/sites/default/files/insight_AG_CO_18.5.17.pdf
https://www.brookings.edu/articles/ahead-of-elections-pakistans-democracy-stands-badly-damaged/