Cost Efficiency Measures In Data Envelopment Analysis With Nonhomogeneous DMUs
Subject Areas : International Journal of Industrial MathematicsM. Barat 1 , G. Tohidi 2 , M. Sanei 3
                                               1 -     Department of Mathematics, College of Science, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
                                               
                                               2 -     Department of Mathematics, College of Science, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
                                               
                                               3 -     Department of Mathematics, College of Science, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
                                               
                                       
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