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Issue Date	Title / Author(s) / Citation	File
2009	Application of fault tree analysis to the service process: service tree analysis approach Geum, Youngjung; Seol, Hyeonju; Lee, Sungjoo; Park, Yongtae JOURNAL OF SERVICE MANAGEMENT; Vol.20 3-4; 433-454	DOI
2012-01	A stochastic patent citation analysis approach to assessing future technological impacts Lee, Changyong; Cho, Yangrae; Seol, Hyeonju; Park, Yongtae Technological Forecasting and Social Change, Vol.79 No.1, pp.16-29	DOI
2012-02	Evaluation of new service concepts using rough set theory and group analytic hierarchy process Lee, Changyong; Lee, Hakyeon; Seol, Hyeonju; Park, Yongtae Expert Systems with Applications, Vol.39 No.3, pp.3404-3412	DOI