Fuzzy Efficiency Decomposition in Two–Stage Systems: A New Slack-Based Measure Approach

Department of Mathematics, Lahijan Branch, Islamic Azad University, Lahijan, Iran.

Department of Mathematics, Central Tehran Branch, Islamic Azad University, Tehran, Iran.

Department of Mathematics, South Tehran Branch, Islamic Azad University, Tehran, Iran.

Department of Mathematics, Bandarabbas Branch, Islamic Azad University, Bandarabbas, Iran.