Jae-Gil Lee 0002 Kun Chang Lee Dong-Hee Shin A New Approach to Exploring Spatiotemporal Space in the Context of Social Network Services. 221-228 2014 HCI (22) https://doi.org/10.1007/978-3-319-07632-4_21 conf/hci/2014-22 db/conf/hci/hci2014-22.html#LeeLS14