https://www.bancaditalia.it/media/approfondimenti/2019/pop-bari/approfondimenti-popBari.pdf
https://theconversation.com/la-paradoja-de-la-abundancia-como-se-explica-que-un-pais-rico-en-recursos-no-genere-crecimiento-economico-207778
https://journals.sagepub.com/doi/pdf/10.1177/00187267231218430
https://wiiw.ac.at/oeffentliche-investitionen-und-sozialstaat-perspektiven-der-budgetpolitik-im-kontext-von-energiekrise-klimawandel-und-eu-budgetregeln-dlp-6484.pdf