1. He, H. A Study on the Production of Setaria Italica Beauv. Ancient Times of China, (Nanjing Agricultural University, 2010).
2. An, Z. The Neolithic archaeology of China. Curr. Anthropol. 29, 753–759 (1988).
3. Lu, H., Zhang, J., Liu, K. B., Wu, N., Li, Y., Zhou, K. et al. Earliest domestication of common millet (Panicum miliaceum) in East Asia extended to 10 000 years ago. Proc. Natl Acad. Sci. USA 106, 7367–7372 (2009).
4. Liu, G. The mode and characteristics of the origin of civilizations of Hongshan culture and West Liaohe River basin. Cultural Relics Archaeol. Inner Mongolia 1, 43–51 (2010).
5. Tian, G. The Origin of Culture in West Liao River Valley, North China, (Northeast Normal University, 2003).