1. Black D., 1928.A Study of Kansu and Honan Aeneolithic Skulls and Specimens from Later Kansu Prebistoric Sites in Comparison with North China and Other Recent Crania. Palaeontologia Sinica Series D. VI (1): 1–83.
2. Chen Dezhen &Wu Xinzhi, 1985.Early Neolithic Human Skeletons from Shigu, Changge, Henan Province. Acta Anthropologica Sinica, 4: 205–214, 314–323.
3. Corruccini R.S., 1973.Size and Shape in Similarity Coefficients Based on Metric Characters. Am. J. Phys. Anthropol., 38: 743–753.
4. Hanihara K., 1979.Dental Traits inAinu, Australian Aborigines, and New World Populations. In: The First Americans: Origins, Affinities, Adaptations. ed. W.S. Laughlin and A.B. Harper, Gustav Fischer New York, Stuttgart. pp. 125–134.
5. Harrower G., 1928.A Study of the Crania of the Hylan Chinese. Biometrika XXB. pp. 245–278.