K. L. Strachan, J. M. Finch, T. Hill, and R. L. Barnett, “A late Holocene sea-level curve for the east coast of South Africa”, S. Afr. J. Sci., vol. 110, no. 1/2, pp. 1–9, Feb. 2014, doi: 10.1590/sajs.2014/20130198.