Measurement of profit inefficiency in presence of interval data using the directional distance function

Subject Areas : Applied Mathematics

Tayybe Ahangari ¹ , Mohsen Rostamy-Malkhalifeh ²

1 - Department of Mathematics , Science and Research Branch, Islamic Azad University,Tehran, Iran.
2 - Department of Mathematics , Science and Research Branch, Islamic Azad University,Tehran, Iran.

Received: 2019-12-18 Accepted : 2019-12-18 Published : 2017-12-01

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