1. Aczél, J., & Roberts, F. S. (1989). On the possible merging functions. Mathematical Social Sciences, 17, 205–243.
2. Akbarian, D. (2015). Ranking all DEA-efficient DMUs based on cross efficiency and analytic hierarchy process methods. Journal of Optimization, 2015, 594727, 10 pages.
3. Ali, A. I., & Seiford, L. M. (1993). The mathematical programming approach to efficiency analysis. In H. O. Fried, C. A. K. Lovell, & S. S. Schmidt (Eds.), The measurement of productive efficiency: Techniques and applications (pp. 120–159). New York, Oxford: Oxford University Press.
4. Amirteimoori, A., & Kordrostami, S. (2005). Efficient surfaces and an efficiency index in DEA: A constant returns to scale. Applied Mathematics and Computation, 163(2), 683–691.
5. Aparicio, J., & Zofío, J. L. (2019). Economic cross-efficiency: Theory and DEA methods. ERIM Report Series Research in Management, No. ERS-2019-001-LIS. Erasmus Research Institute of Management (ERIM). Erasmus University Rotterdam, The Netherlands.
http://hdl.handle.net/1765/115479