Estimation of Returns to Scale in the Presence of Undesirable (bad) Outputs in DEA when the Firm is Regulated

Subject Areas : International Journal of Data Envelopment Analysis

F .Emami ¹ , M .Rostamy malkhalifeh ² , H .Safdari ³

1 - Department of Mathematics, Shahid Rajaee Teacher University, Lavizan, Tehran, Iran. P.O.Box 16785-163
2 - Department of Mathematics, Science and Research Branch, Islamic Azad University, Tehran, Iran.
3 - Department of Mathematics, Shahid Rajaee Teacher University, Lavizan, Tehran, Iran. P.O.Box 16785-163

Received: 2014-09-08 Accepted : 2014-12-03 Published : 2014-12-03

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