1. BBC News, May 2nd, 2020. https://www.bbc.co.uk/news/health-52493784
2. Botkin, D. (1990). Discordant Harmonies. Oxford: Oxford University Press.
3. Caldwell, B. (2004). Hayek’s challenge. Chicago: University of Chicago Press.
4. Chang, H. (2007). Bad Samaritans. London: Bloomsbury.
5. Coase, R. (1992). The institutional structure of production. American Economic Review, 82(4), 713–719.