http://www.bankofengland.co.uk/publications/Documents/speeches/2017/speech968.pdf
https://www.congress.gov/117/bills/s3572/BILLS-117s3572is.xml
https://www.brookings.edu/blog/future-development/2018/04/03/the-middle-productivity-trap-why-are-less-productive-firms-systematically-lagging-behind/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=61867197
https://www.cfr.org/blog/power-and-financial-interdependence