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Lee, Wonji; Lee, Junghye; Lee, Hyeseon; Jun, Chi-Hyuck; Park, Il-Su; Kang, Sung-Hong
Industrial Engineering and Management Systems, Vol.13 No.4, pp.449-453
Lee, Junghye; Kwon, Ryeok-Hwan; Kim, Hyung Woo; Kang, Sung-Hong; Kim, Kwang-Jae; Jun, Chi-Hyuck
SERVICE SCIENCE, Vol.10 No.3, pp.289-301