List of Articles two-stage systems

• Open Access Article
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  1 - Evaluation of efficiency using the product method in two-stage systems with undesirable outputs
  Sepideh Vatani
  10.30495/ijdea.2022.68507.1169
• Open Access Article
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  2 - Two-stage Production Systems under Variable Returns to Scale Technology: A DEA Approach
  roza azizi reza kazemi matin
• Open Access Article
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  3 - A Bounded Additive Model for Efficiency Evaluation in Two-Stage Production Systems With Negative Data
  Hamidreza Babaei Asil Reza Kazemi Matin Mohsen Khounsiavash Zohreh Moghaddas