Zhang Y and R Bartels (1998). “The Effect of Sample Size on the Mean Efficiency in DEA with an Application to Electricity Distribution in Australia, Sweden and New Zealand.” JPA 9(3): 205-232.

Zhang Y and R-F Shen (2004). “Demonstration Research on Evaluating Investment Value of Listed Companies by Data Envelopment Analysis.” J Tongji University – Natural Science 32(7): 961-965.

Zhang YQ (2002). “The Impacts of Economic Reform on the Efficiency of Silviculture: A Non-Parametric Approach.” Environment J Development Economics 7: 107-122.

Zhao K and J-c Cui (2003). “Method Research and Demonstration for Assessing and Forecasting Damage of Flood Disaster.” J Systems Engineering 18(4): 337-342.

Zhao M, C Cheng and X Wu (2005). “Qualitative Method and Mcdea Applied to Plan Assessment of Diversion Project.” Water Resources and Power 23(4): 58-60.

Zhao MY, CT Cheng and G Li (2006). “Multiple Criteria Data Envelopment Analysis for Full Ranking Units Associated to Environment Impact Assessment.” Int J Environment and Pollution 28(3-4): 448-464.

Zhao Y-Q, J Chen and J-X Han (2005). “Evaluation of Distributors Using Pca-DEA Algorithmic Model.” Industrial Engineering Journal 8(6): 95-98.

Zheng JH, XX Liu and A Bigsten (1998). “Ownership Structure and Determinants of Technical Efficiency: An Application of Data Envelopment Analysis to Chinese Enterprises (1986-1990).” J Comparative Economics 26(3): 465-484.

Zheng JH, XX Liu and A Bigsten (2003). “Efficiency, Technical Progress, and Best Practice in Chinese State Enterprises (1980-1994).” J Comparative Economics 31(1): 134-152.

Zhang WD, S Zhang and XM Luo (2006). “Technological Progress, Inefficiency, and Productivity Growth in the US Securities Industry, 1980-2000.” J Business Research 59(5): 589-594.