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		Journal of Korean Society of Industrial and Systems Engineering :: Vol.45 No.3 pp.49-56 DOI:https://doi.org/10.11627/jksie.2022.45.3.049 Open abstract    
Journal of Korean Society of Industrial and Systems Engineering :: Vol.45 No.3 pp.49-56
			DOI:https://doi.org/10.11627/jksie.2022.45.3.049
			 
			