1. Pilbeam, D. R. A. Rev. Anthrop. 8, 333–352 (1979).
2. Andrews, P. in Aspects of Human Evolution, 25–61 (Taylor & Francis, 1981).
3. Simons, E. L. & Pilbeam, D. R. Folia Primatol. 3, 81–153 (1965).
4. Delson, E. in Paleoanthropology in The Peoples Republic of China 40–65 (Natn. Acad. Sci., Washington D.C., 1977).
5. Szalay, F. S. & Delson, E. Evolutionary History of the Primates (Academic, New York, 1979).