
https://www.cer.eu/in-the-press/geopol%C3%ADtica-est%C3%A1-levar-alemanha-tornar-se-mais-pragm%C3%A1tica-na-frente-or%C3%A7amental

https://data.oecd.org/natincome/net-lending-borrowing-by-sector.htm

https://knowledge.wharton.upenn.edu/article/how-the-u-s-could-stabilize-debt-and-fuel-economic-growth/