1. Ajie, H, Kaplan, IR, Slota, PJ, Jr and Taylor, RE 1990 AMS radiocarbon dating of bone osteocalcin. In Yiou, F and Raisbeck, GM, eds, Proceedings of the 5th International Symposium on Accelerator Mass Spectrometry. Nuclear Instruments and Methods B52(3,4): 433–437.
2. Arnold, JR and Libby, WF 1950 Radiocarbon Dates (September 1, 1950). Chicago: University of Chicago, Institute for Nuclear Studies. 1951 Radiocarbon dates. Science 113: 111–120.
3. Bada, JL, Gillespie, R, Gowlett, JAJ and Hedges, REM 1984 Accelerator mass spectrometry radiocarbon ages of amino acid extracts from Californian paleoindian skeletons. Nature 312: 442–444.
4. Bada, JL and Helfman, PM 1975 Amino acid racemization dating of fossil bones. World Archaeology 7: 160–183.
5. Bada, JL, Schroeder, R and Carter, GF 1974 New evidence for the antiquity of man in North America deduced from aspartic acid racemization. Science 184: 791–793.