Case-based tutoring systems for procedural problem solving on the www. - Sun-Gwan Han; Soon-Geun Lee; GeunSik Jo (Expert Syst. Appl., 2005)

Semantic Web Approach in Designing a Collaborative E-Item Bank System. - Heung-Nam Kim; Ae-Ttie Ji; Soon-Geun Lee; GeunSik Jo (SOFSEM (1), 2007)