A Comparative Analysis of Clustering Methodology and Application for Market Segmentation: K-Means, SOM and a Two-Level SOM. - Sang-Chul Lee; Ja-Chul Gu; Yung Ho Suh (ISMIS, 2006)

Determinants of behavioral intention to mobile banking. - Ja-Chul Gu; Sang-Chul Lee; Yung Ho Suh (Expert Syst. Appl., 2009)

Comparing Utilitarian and Hedonic Usefulness to User Intention in Multipurpose Information Systems. - Ja-Chul Gu; Liu Fan; Yung Ho Suh; Sang-Chul Lee (Cyberpsychology Behav. Soc. Netw., 2010)

Commenders: A recommendation procedure for online book communities. - Hyea Kyeong Kim; Hee Young Oh; Ja-Chul Gu; Jae Kyeong Kim (Electron. Commer. Res. Appl., 2011)