@article{Qian SUN_739, author = {Qian SUN, Fanghua TANG, Yong TANG}, title = {An economic tie network-structure analysis of urban agglomeration in the middle reaches of Changjiang River based on SNA}, publisher = {Journal of Geographical Sciences}, year = {2015}, journal = {Journal of Geographical Sciences}, volume = {25}, number = {6}, eid = {739}, pages = {739-755}, keywords = {urban agglomeration;the middle reaches of Changjiang River;economic network;gravitation model;social network analysis}, doi = https://www.geogsci.com/EN/10.1007/s11442-015-1199-2 }