1. StatSA. National accounts: Water management areas in South Africa. Discussion document D0405.8. Pretoria: StatsSA; 2010. Available from: https://www.statssa.gov.za/publications/D04058/D04058.pdf
2. Abiye TA, Leketa KC. The need for managing historic groundwater in the Limpopo River Basin, southern Africa: Based on the δ18O, δ2H and 14C data. Groundw Sustain Dev. 2021;14, Art. #100583. https://doi.org/10.1016/j. gsd.2021.100583
3. Parsons R. Cape drought: What is happening to our groundwater? Daily Maverick. 30 July 2018. Available from: https://www.dailymaverick.co.za/article/2018-07-30-cape-drought-whats-happening-to-our-groundwater/
4. Parsons R. The groundwater debate has to be science-based. Daily Maverick. 14 October 2018. Available from: https://www.dailymaverick.co.za/article/2018-10-14-the-groundwater-debate-has-to-be-science-based/
5. Parsons R. A delicate balance: Understanding underground water reserves. Daily Maverick. 03 April 2019. Available from: https://www.dailymaverick.co.za/article/2019-04-03-a-delicate-balance-understanding-undergroundwater-reserves/