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A Study on the Evaluation of Equilibrium Price between PSTN and VoIP Service

Gui-Ryong Ha****, Yoon Sang-Hum*, Jin Xiang-Hua*, Park Jong-Heon*, Park Young-Jun**, Juhn Jae-Ho***,

Journal of Korean Society of Industrial and Systems Engineering :: Vol.33 No.3 pp.137-145

DOI:
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