
https://theconversation.com/la-anomalia-empirica-de-las-elecciones-en-argentina-donde-dos-mas-dos-no-suman-cuatro-217319

https://www.governo.it/it/articolo/intervento-del-presidente-draghi-al-meeting-di-rimini/20424

https://www.bertelsmann-stiftung.de/fileadmin/files/BSt/Publikationen/imported/leseprobe/1_974_Leseprobe.pdf