https://www.cesifo-group.de/DocDL/EEAG-2018.pdf
https://www.ifs.org.uk/uploads/publications/bns/BN243.pdf
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://onlinelibrary.wiley.com/doi/10.1111/ecaf.12565