Estimating right and left returns to scales in data envelopment analysis: A new approach

Subject Areas : International Journal of Data Envelopment Analysis

M. Khoveyni ¹ (Department of Applied Mathematics, Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran)
R. Eslami ² (Department of Mathematics, Islamic Azad University, South Tehran Branch, Tehran, Iran)

Received: 2014-03-19 Accepted : 2014-03-19 Published : 2014-06-01

Keywords: Data envelopment analysis (DEA, Right and Left Returns to Scal, Efficiency,