CDSSGen: A Dynamic Clinical Decision Support System Generator. - Heejung Chang; Hyungki Song; Kangsun Lee; Gyochang Kim; Jonghoon Chun; Jinwook Choi (METMBS, 2003)

Applying Web Services and Design Patterns to Modeling and Simulating Real-World Systems. - Heejung Chang; Kangsun Lee (AIS, 2004)

Simulation-Based Web Service Composition: Framework and Performance Analysis. - Heejung Chang; Hyungki Song; Wonsang Kim; Kangsun Lee; Hyunmin Park; Sedong Kwon; Jooyoung Park (AsiaSim, 2004)

A Quality-Driven Web Service Composition Methodology for Ubiquitous Services. - Heejung Chang; Kangsun Lee (J. Inf. Sci. Eng., 2010)