Liu Y-P, Z-G Lin and Z-Y Shen (2006). “Effective Data Envelopment Analysis Method for Ranking Decision Making Units.” System Engineering Theory and Practice 26(3): 112-116.

Liu Y-P, Z-G Lin and Z-Y Shen (2006). “Effective Data Envelopment Analysis Method for Ranking Decision Making Units.” System Engineering Theory and Practice 26(3): 112-116.

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