1. Agrawal, D. P., B. S. Kotlia, and S. Kusumgar. 1988. Chronology and significance of the Narmada Formations. Proceedings of the Indian National Science Academy 54-A(3): 418–24.
2. Aguirre, E. 1991. Les premiers peuplements humains de la péninsule ibérique, 143–50. In Les Premiers Européens, ed. E. Bonifay and B. Vandermeersch. Paris: Éditions du Comité des Travaux Historiques et Scientifiques.
3. Aiello, L. C. 1993. The fossil evidence for Modern human origins in Africa: A revised view. American Anthropologist 95:73–96.
4. Aigner, J. S. 1986. The age of Zhoukoudian Locality 1: The newly proposed 018 correspondences. Anthropos (Brno) 23:157–73.
5. Aigner, J. S. 1988. Dating the earliest Chinese Pleistocene localities: The newly proposed 018 correspondences. In , 1032–61The Palaeoenvironment of East Asia From the Mid-Tertiary. Vol. II, ed. P. Whyte, J. S. Aigner, N. G. Jablonski, G. Taylor, D. Walker and P. Wang. Hong Kong: Centre of Asian Studies.