A preference change and discretionary stopping in a consumption and porfolio selection problem. - Kyoung Jin Choi; Hyeng Keun Koo (Math. Methods Oper. Res., 2005)

One-Dimensional Oxide Nanostructures as Gas-Sensing Materials: Review and Issues. - Kyoung Jin Choi; Ho Won Jang (Sensors, 2010)

Intertemporal preference with loss aversion: Consumption and risk-attitude. - Kyoung Jin Choi; Junkee Jeon; Hyeng Keun Koo (J. Econ. Theory, 2022)

Endogenous Credit, Business Cycle, and Portfolio Selection. - Kyoung Jin Choi; Hyeng Keun Koo; Byung Hwa Lim; Jane Yoo (Oper. Res., 2024)