%0 Journal Article %J PLoS ONE %D 2014 %T Intra-urban human mobility and activity transition: Evidence from social media check-in data %A L. Wu %A Zhi, Y. %A Sui, Z. %A Y. Liu %B PLoS ONE %V 9 %G eng %U http://www.scopus.com/inward/record.url?eid=2-s2.0-84901268803&partnerID=40&md5=98c0e1cc7ae3c5d64ff902973be1faa4 %] 000336369200050 %R 10.1371/journal.pone.0097010