Environmental Assessment and Congestion for DMUs With Undesirable Outputs
Subject Areas : International Journal of Industrial MathematicsM. ‎Khodadadi‎ 1 , H. Zare Haghighi 2
1 - Department of Mathematics, Urmia Branch, Islamic Azad University, Urmia, Iran.
2 - Department of Mathematics, Urmia Branch, Islamic Azad University, Urmia, Iran.
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