https://museum.rba.gov.au/exhibitions/make-your-money-fight/rationing-austerity-and-black-markets/
Rationing, Austerity and Black Markets | Reserve Bank of Australia - Museum
reserve bank of australiablack marketsrationingausterity
https://www.princeton.edu/news/2016/06/14/after-legal-ivory-experiment-black-markets-thrive-greater-demand-less-risk
After legal-ivory experiment, black markets thrive from greater demand, less risk
Researchers from Princeton University and the University of California-Berkeley found that a one-time legal sale of ivory intended to stifle elephant poaching...
black marketslegal