Analysis of returns to scale and efficiency in the financial performance of listed petrochemical companies by DEA method

Subject Areas : International Journal of Data Envelopment Analysis

Saeid Rezaeilava ¹ (Department of Financial Management, Central Tehran Branch, Islamic Azad University, Tehran, Iran)
Mirfeiz Fallah Shams Layalestani ² (Department of Commerce, Central Tehran Branch, Islamic Azad University, Tehran, Iran)
Masoud Sanei ³ (Department of Mathematics, Central Tehran Branch, Islamic Azad University, Tehran, Iran)
shokoofeh BaniHashemi ⁴ (Department of Mathematics, Allameh Tabatabai University, Tehran, Iran)

Received: 2021-01-19 Accepted : 2021-04-04 Published : 2021-02-01

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