Seiford LM and J Zhu (1998). “Identifying Excesses and Deficits in Chinese Industrial Productivity (1953-1990): A Weighted Data Envelopment Analysis Approach.” Omega 26(2): 279-296.

Seiford LM and J Zhu (1998). “Identifying Excesses and Deficits in Chinese Industrial Productivity (1953-1990): A Weighted Data Envelopment Analysis Approach.” Omega 26(2): 279-296.

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