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Journal of Korean Society of Industrial and Systems Engineering :: Vol.40 No.2 pp.99-103
DOI:https://doi.org/10.11627/jkise.2017.40.2.099
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Journal of Korean Society of Industrial and Systems Engineering :: Vol.40 No.1 pp.144-149
DOI:https://doi.org/10.11627/jkise.2017.40.1.144
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