https://www.imf.org/~/media/Files/Publications/WEO/2018/October/English/c2.ashx?la=en
https://knowledge.wharton.upenn.edu/article/ai-in-finance-the-promise-and-potential-pitfalls/
https://www.socialeurope.eu/the-german-debt-brake-reform-urgent
http://www.berkshirehathaway.com/letters/2017ltr.pdf