https://www.ecb.europa.eu/press/key/date/2012/html/sp120726.en.html
https://www.bruegel.org/sites/default/files/2023-06/PB%2012%202023.pdf
https://www.naco.org/sites/default/files/documents/Analysis-of-COVID-19s-Impact-on-County-Finances-and-Implications-for-the-US-Economy.pdf
https://www.economiesuisse.ch/de/print/pdf/node/48305