@article{GUO Jian-ke_1849, author = {GUO Jian-ke, HAN Zeng-lin, WANG Li}, title = {The spatial system of freight extrovert service function of central cities in China}, publisher = {GEOGRAPHICAL RESEARCH}, year = {2012}, journal = {GEOGRAPHICAL RESEARCH}, volume = {31}, number = {10}, eid = {1849}, pages = {1849-1860}, keywords = {

central city;freight extrovert service function;hierarchical structure;spatial system

}, doi = https://www.dlyj.ac.cn/EN/10.11821/yj2012100011 }