Inglesi-Lotz, Roula, and James Blignaut. “Estimating the Opportunity Cost of Water for the Kusile and Medupi Coal-Fired Electricity Power Plants in South Africa”. Journal of Energy in Southern Africa, vol. 23, no. 4, Nov. 2012, pp. 76-84, doi:10.17159/2413-3051/2012/v23i4a3180.