TY - GEOGRAPHICAL RESEARCH A1 - Xin CHEN, Jian PENG, Yanxu LIU, Yunqian CHEN, Tianyi LI T1 - Measuring spatial expansion and correlations of cities in Beijing-Tianjin-Hebei Urban Agglomeration using DMSP/OLS nighttime light data Y1 - 2018-05-20 14:17:42.73 JF - GEOGRAPHICAL RESEARCH JO - GEOGRAPHICAL RESEARCH SP - 898 EP - 909 VL - 37 IS - 5 UR - {https://www.dlyj.ac.cn/EN/10.11821/dlyj201805004} N1 - 10.11821/dlyj201805004 ER -