COVID-19 risk assessment driven by urban spatiotemporal big data: a case study of Guangdong-Hong Kong-Macao Greater Bay Area
XIA Jizhe, ZHOU Ying, LI Zhen, LI Fan, YUE Yang, CHENG Tao, LI Qingquan
Acta Geodaetica et Cartographica Sinica . 2020, (6): 671 -680 .  DOI: 10.11947/j.AGCS.2020.20200080