A Two-Tier Spatial Index for Non-flat Spatial Data Broadcasting on Air. - SeokJin Im; HeeJoung Hwang (IEICE Trans. Commun., 2014)

An Index Based on Irregular Identifier Space Partition for Quick Multiple Data Access in Wireless Data Broadcasting. - SeokJin Im; HeeJoung Hwang (IEICE Trans. Inf. Syst., 2016)

Quick Window Query Processing Using a Non-Uniform Cell-Based Index in Wireless Data Broadcast Environment. - SeokJin Im; HeeJoung Hwang (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)