Smith, T. M., Tafforeau, P., Reid, D. J., Grün, R., Eggins, S., Boutakiout, M., & Hublin, J.-J. (2007). Earliest evidence of modern human life history in North African Homo sapiens. Proceedings of the National Academy of Sciences of the United States of America, 104(15), 6128-6133. doi:10.1073/pnas0700747104.