https://www.boeckler.de/fpdf/HBS-008396/p_imk_pb_132_2022.pdf
https://unctad.org/system/files/official-document/diaeiainf2021d1_en.pdf
http://www.ips-journal.eu/regions/europe/article/show/a-banking-union-without-unity-2181/
https://www.bancaditalia.it/pubblicazioni/quaderni-storia/2020-0046/QSE-46.pdf