1. Maxmen, A. (2018) “As Cape Town Water Crisis Deepens, Scientists prepare for ‘Day Zero’,” Nature, 24 January 2018, (www.nature.com/articles/d41586-018-01134-x)
2. IPCC (2014). Climate Change 2014, Working Group 2: “Africa”. [Core Writing Team Niang, I. and Ruppel, O.C]. Chapter 22. Geneva, Switzerland, 167pp.
3. “Uniqueness and causes of the California drought.” Complex Adaptive Systems. Procedia Computer Sciences;Richman;Elsevier,2015
4. “The influence of ENSO on winter rainfall in South Africa”;Philippon;International J. of Climatology,2012
5. Tadross, M and Johnston, P. (2012). “Climate Systems Regional Report: Southern Africa”. In Sub-Saharan African Cities: A Five-City Network to Pioneer Climate Adaptation through participatory Research and Local Action, ICLEI – Local Governments for Sustainability – Africa Climate Systems Regional Report: Southern Africa, 38pp.