Two-stage Production Systems under Variable Returns to Scale Technology: A DEA Approach

Subject Areas : Design of Experiment

roza azizi ¹ , reza kazemi matin ²

1 - Islamic Azad University, Karaj Branch, Department of Mathematics, Karaj, Iran
2 - Islamic Azad University, Karaj Branch, Department of Mathematics, Karaj, Iran

Received: 2009-10-19 Accepted : 2009-11-15 Published : 2010-01-18

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