@article {Wu2014, title = {Intra-urban human mobility and activity transition: Evidence from social media check-in data}, journal = {PLoS ONE}, volume = {9}, number = {5}, year = {2014}, note = {施引文献 15}, doi = {10.1371/journal.pone.0097010}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84901268803\&partnerID=40\&md5=98c0e1cc7ae3c5d64ff902973be1faa4}, author = {L. Wu and Zhi, Y. and Sui, Z. and Y. Liu} }