https://data.oecd.org/natincome/net-lending-borrowing-by-sector.htm
http://www.transparency.org/news/feature/europe_and_central_asia_an_overall_stagnation
https://knowledge.wharton.upenn.edu/article/pandemic-turbo-charging-government-innovation-will-stick/?utm_source=kw_newsletter&utm_medium=email&utm_campaign=2020-05-19
https://cepr.org/sites/default/files/policy_insights/PolicyInsight91.pdf