Ahn TS, A Charnes and WW Cooper (1989). “A Note on the Efficiency Characterizations Obtained in Different DEA Models.” Socio-Econ Plan Sci 22(6): 253-257.

Agrell PJ and P Bogetoft (2005). “Economic and Environmental Efficiency of District Heating Plants.” Energy Policy 33(10): 1351-1362.

Ahn TS and LM Seiford (1993). “Sensitivity of DEA to Models and Variable Sets in a Hypothesis Test Setting: the Efficiency of University Operations.” in Ijiri Y (eds.) Creative and Innovative Approaches to the Science of Management Quorum Books: 191-208.

Agrell PJ, P Bogetoft and J Tind (2002). “Incentive Plans for Productive Efficiency, Innovation and Learning.” Int J Prod Econ 78(1): 1-11.

Ahuja G and SK Majumdar (1998). “An Assessment of the Performance of Indian State-Owned Enterprises.” JPA 9(2): 113-132.

Agrell PJ, P Bogetoft and J Tind (2005). ?DEA and Dynamic Yardstick Competition in Scandinavian Electricity Distribution.” JPA 23(2): 173-201.

Aida K, WW Cooper, JT Pastor and T Sueyoshi (1998). “Evaluating Water Supply Services in Japan with Ram: A Range-Adjusted Measure of Inefficiency.” Omega 26(2): 207-232.

Adler N, L Friedman and Z Sinuany-Stern (2002). “Review of Ranking Methods in the Data Envelopment Analysis Context.” EJOR 140(2): 249-265.

Adler N and B Golany (2001). “Evaluation of Deregulated Airline Networks Using Data Envelopment Analysis Combined with Principal Component Analysis with an Application to Western Europe.” EJOR 132(2): 260-273.

Adler N and B Golany (2002). “Including Principal Component Weights to Improve Discrimination in Data Envelopment Analysis.” JORS 53(9): 985-991.