Zhao, Miaoxi, Ben Derudder, and Junhao Huang. 2017. “Polycentric Development in China’s Mega-City Regions, 2001-08: A Comparison of the Yangtze and Pearl River Deltas”. DIE ERDE – Journal of the Geographical Society of Berlin 148 (1):1-13. https://doi.org/10.12854/erde-148-26.