Steele, Teresa Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
http://www.anthropology.ucdavis.edu/labs/paleoanthropology-1/people-1/teresa-steele/publications-1/8%20Steele-Klein_08_Archaeofauna_mollusks%20sm.pdf (Any fulltext)
Steele, T., & Klein, R. (2008). Intertidal shellfish use during the Middle and Later Stone Age of South Africa. Archaeofauna, 17, 63-76.