https://www.foreignaffairs.com/united-states/2008-crisis-never-saw-coming
https://www.bankofengland.co.uk/-/media/boe/files/speech/2020/covid-19-and-the-economy-speech-silvana-tenreyro.pdf?la=en&hash=94DE5B4F39A84E537341F3
https://www.bruegel.org/sites/default/files/2025-08/PB%2023%202025_2.pdf
https://www.brookings.edu/articles/the-hutchins-center-explains-the-neutral-rate-of-interest/