EN中文
Spatial heterogeneity of gravity model parameters: a case study of inter-city railway passenger flow in China
Qingjing ZHENG, Teqi DAI, Zhuolin TAO, Mengmeng ZHANG
PROGRESS IN GEOGRAPHY . 2014, (12): 1659 -1665 .  DOI: 10.11820/dlkxjz.2014.12.009