https://www.cesifo.org/DocDL/cesifo1_wp6586.pdf
https://www.politico.eu/article/film-green-border-agnieszka-green-poland-government-hate-campaign-election-pis-kaczynski-duda/
https://theconversation.com/del-mundo-de-ayer-a-la-europa-del-manana-la-utopia-de-stefan-zweig-231524
https://www.politico.eu/wp-content/uploads/2021/11/02/Coercion.pdf