1. Chen Shuang, Yao Shimou, Zhang Yiben, 1999. Comprehensive thought on the appropriate ratio of urbanization people in China. Economic Geography, 19(4): 111–116. (in Chinese)
2. Chen Zhi, Liu Yaobin, Yang Yiming, 2003. Grey correlative analysis of the influence factors and regional disparities of the level of urbanization in different regions: A case study of Hubei Province. World Regional Studies, 12(3): 51–58. (in Chinese)
3. Chen Xiuqiong, Huang Fucai, 2006. Temporal change of regional disparity in Chinese inbound tourism. Acta Geographica Sinica, 61(12): 1271–1280. (in Chinese)
4. Ding Xuelian, Dong Minghui, 2006. An analysis on the discrepancy in urbanization level and the corresponding strategies and countermeasures of adjustment within a province region: Taking Hunan Province as an example. Journal of Jishou University (Social Sciences Edition), 27(2): 117–121. (in Chinese)
5. Fang Chuanglin, Liu Xiaoli, Lin Xueqin, 2008. Stages correction and regularity analysis of urbanization course of China. Arid Land Geography, 31(4): 512–523. (in Chinese)