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		Journal of Korean Society of Industrial and Systems Engineering :: Vol.45 No.1 pp.10-19 DOI:https://doi.org/10.11627/jksie.2022.45.1.010 Open abstract    
Journal of Korean Society of Industrial and Systems Engineering :: Vol.45 No.1 pp.10-19
			DOI:https://doi.org/10.11627/jksie.2022.45.1.010
			 
			