A Model for Measuring Stock Depletion Costs. - Yu Sang Chang; Powell Niland (Oper. Res., 1967)

Strategy, structure, and channel for global leaders of industrial service: a flow chart analysis of the expanded value network. - Yu Sang Chang (Int. J. Serv. Technol. Manag., 2012)

Forecasting road fatalities by the use of kinked experience curve. - Yu Sang Chang; Jinsoo Lee (Int. J. Data Anal. Tech. Strateg., 2013)

When will the 2015 millennium development goal of infant mortality rate be finally realised? - Projections for 21 OECD countries through 2050. - Yu Sang Chang; Jinsoo Lee; Hyuk Ju Kwon (Int. J. Data Anal. Tech. Strateg., 2018)

Population Size vs. Number of Crimes: Is the Relationship Superlinear? - Yu Sang Chang; SungSup Brian Choi; Jinsoo Lee; Won Chang Jin (Int. J. Inf. Syst. Soc. Chang., 2018)

Are technology improvement rates of knowledge industries following Moore's law? An empirical study of microprocessor, mobile cellular, and genome sequencing technologies. - Yu Sang Chang; Jinsoo Lee; Yun Seok Jung (Int. J. Technol. Manag., 2018)