Zheng Jingyun, Zhang Shihuang, Liu Xiaolei. The Regional Division of Drought/Flood in China and the Variation of Drought/Flood in Each Region for Last 500 Years[J]. Chinese Journal of Atmospheric Sciences, 1993, 17(z1): 112-121. DOI: 10.3878/j.issn.1006-9895.1993.z1.17