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Cooper WW, ZM Huang, V Lelas, SX Li and OB Olesen (1998). “Chance Constrained Programming Formulations for Stochastic Characterizations of Efficiency and Dominance in DEA.” JPA 9(1): 53-79.

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Cook WD, LM Seiford and J Zhu (2004). “Models for Performance Benchmarking: Measuring the Effect of E-Business Activities on Banking Performance.” Omega 32(4): 313-322.

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Cooper WW (1999). “Operational Research/Management Science: Where It’s Been. Where It Should Be Going?” JORS 50(1): 3-11.