Ye, Lei, and Lingqian Hu. “Spatiotemporal Distribution and Trend of COVID-19 in the Yangtze River Delta Region of the People’s Republic of China”. Geospatial Health 15, no. 1 (June 15, 2020). Accessed October 24, 2020. https://geospatialhealth.net/index.php/gh/article/view/889.