1. CAO Shenggeng. 1992. Micromorphological Features of Paddy Soils. In: Li Qingkui (ed.), Paddy Soils in China. Beijing, Science Press. Pp. 56–76. (In Chinese)
2. CAO Zhihong, YANG Linzhang, LIN Xiangui, et al. 2007. Morphological characteristics of paddy fields, paddy soil profile, phytolith and fossil rice grain of the Neolithic Age in Yangtze River Delta. Acta Pedologica Sinica 44(5): 838–847. (In Chinese)
3. DING Jinlong. 2004. Origin of Neolithic paddy fields and rice farming in the lower reaches of Yangtze River. Southeast Culture (2): 19–31. (In Chinese)
4. CHEN Zhirong and HE Yinwu. 1990. A preliminary discussion on date determination of Guanghan Clay and Chengdu Clay with 14C dates. Mountain Research 8(3): 167–173. (In Chinese)
5. FU Shun, YE Qingpei, WANG Chengshan et al. 2005. Environmental evolution of disappearance of Sanxingdui Civilization. Geological Science and Technology Information 24(3): 43–47. (In Chinese)