
https://www.brookings.edu/articles/the-hutchins-center-explains-the-neutral-rate-of-interest/

https://knowledge.wharton.upenn.edu/article/why-are-the-markets-collapsing-how-bad-will-covid-19-really-be/?utm_source=kw_newsletter&utm_medium=email&utm_campaign=2020-03-17

http://www.japantimes.co.jp/opinion/2017/05/15/commentary/world-commentary/france-great-britain-unbeatable-combination/#.WTqNinm1s2x