https://www.nuffieldtrust.org.uk/files/2020-03/achieving-scale-and-spread-report-final.pdf
https://digitalcommons.law.scu.edu/cgi/viewcontent.cgi?article=1685&context=chtlj
https://www.ipg-journal.de/regionen/global/artikel/detail/fatales-ungleichgewicht-4473/
https://www.eca.europa.eu/Lists/ECADocuments/SR22_18/SR_Resilience-EU-inst_EN.pdf