@article{Thackeray_2018, title={Alpha and sigma taxonomy of Pan (chimpanzees) and Plio-Pleistocene hominin species}, volume={114}, url={https://sajs.co.za/article/view/5823}, DOI={10.17159/sajs.2018/a0291}, number={11/12}, journal={South African Journal of Science}, author={Thackeray, Francis J.}, year={2018}, month={Nov.} }