de Villiers, G., Viljoen, G. and Booysen, H. (2007) “Standard residential flood damage functions for South African conditions”, Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt;, 26(1), pp. 26-36. doi: 10.4102/satnt.v26i1.122.