1. Brunner, H. &B. Coman, 1974. The Identification of Mammalian Hair. Inkata Press, Melbourne.
2. Nrips (National Research Institute of Police Science), 1976. Methods of Examination of Body Tissues. NRIPS, Tokyo. (in Japanese)
3. Ryder, M. L., 1973.Hair. Edward Arnold, London.
4. Tsukahara, T., Lions eat chimpanzees: the first evidence of predation by lions on wild chimpanzees.Amer. J. Primatol. (in press).