@article{Haitao MA_1793, author = {Haitao MA, Chuanglin FANG, Sainan LIN, Xiaodong HUANG, Chengdong XU}, title = {Hierarchy, clusters, and spatial differences in Chinese inter-city networks constructed by scientific collaborators}, publisher = {Journal of Geographical Sciences}, year = {2018}, journal = {Journal of Geographical Sciences}, volume = {28}, number = {12}, eid = {1793}, pages = {1793-1809}, keywords = {Chinese city networks;knowledge flows;scientific collaboration;co-authored papers;knowledge city clusters;China academic journal;innovative country;regional differences}, doi = https://www.geogsci.com/EN/10.1007/s11442-018-1579-5 }