
https://www.iedonline.eu/download/2017/IED-REPORT-Bratislava-2017.pdf

https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef18032en.pdf

https://www.politico.eu/article/carles-puigdemont-catalonia-independence-spain-election-pedro-sanchez-alberto-nunez-feijoo/