Ray, S. C. (2004). Data envelopment analysis: Theory and techniques for economics and operations research. Cambridge, UK: Cambridge University Press.
Παραπομπή Chicago StyleRay, Subhash C. Data Envelopment Analysis: Theory and Techniques for Economics and Operations Research. Cambridge, UK: Cambridge University Press, 2004.
Παραπομπή MLARay, Subhash C. Data Envelopment Analysis: Theory and Techniques for Economics and Operations Research. Cambridge, UK: Cambridge University Press, 2004.
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