Research on the spatial differentiation and effects of network structure in tourism flow in Chinese cities: Big data mining based on Ctrip
FANG Ye-lin, HUANG Zhen-fang, LI Jing-long, CHENG Xue-lan, SU Xue-qing
JOURNAL OF NATURAL RESOURCES . 2022, (1): 70 -82 .  DOI: 10.31497/zrzyxb.20220105