Li X-M, F-H Hou, Z-X Zhang and J-F Sun (2004). “Evaluation of Economic Benefit of Petroleum Enterprises in DEA.” J Southwestern Petroleum Institute 26(6): 86.

Li G and J Bai (2000). “Extended DEA and its Application to Making Economic Plan.” Chengdu Kejidaxue Xuebao/J Chengdu University of Science and Technology 32(1): 78-81.

Li G and Y Liu (1995). “Application for DEA to the Study of Production Function.” J South China University of Technology 23(6): 53.

Li G and Y Liu (1997). ?DEA Based on Mutiple Objective Programming.” System Engineering Theory and Practice 17(3): 16-22.

Li G and Y Liu (1997). ?DEA with Unreducible Inputs and Unexpansible Outputs.” J Systems Science and Systems Engineering 6(1): 61-69.

Li GJ and H Yan (2002). ?DEA Model for Measuring Input-and-Output-Based Technical Efficiency.” System Engineering Theory and Practice 22(1): 26.

Li H and J Zhu (2005). “Ranking the Efficiency Performance within a Set of Decision Making Units by Data Envelopment Analysis ” Int J Info Tech Decis 4(3): 345-357.

Li HC and S Mirmirani (1998). “Global Transfer of Arms Technology and its Impact on Economic Growth.” Contemporary Economic Policy 16(4): 486-498.

Li L and J-C Cui (2003). “Selection of Input-Output Items and Data Disposal in DEA.” J Systems Engineering 18(6): 487-490.

Li LX and WC Benton (1996). “Performance Measurement Criteria in Health Care Organizations: Review and Future Research Directions.” EJOR 93(3): 449-468.