https://lawliberty.org/book-review/the-canary-in-the-feds-coal-mine/
http://www.bankofengland.co.uk/publications/Documents/speeches/2017/speech992.pdf
https://www.aspistrategist.org.au/germanys-weakness-is-bad-for-europe/
https://cepr.org/sites/default/files/policy_insights/PolicyInsight92.pdf