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 April 19, 2024. https://www.geospatialhealth.net/gh/article/view/889.