
http://www.europarl.europa.eu/pdf/eurobarometre/2018/oneyearbefore2019/eb89_one_year_before_2019_eurobarometer_en_results_annex.pdf

https://theconversation.com/tres-preguntas-sobre-la-amnistia-claves-para-el-futuro-de-espana-216937

http://wir2018.wid.world/files/download/wir2018-summary-french.pdf