List of Articles داده های منفی Open Access Article Abstract Page Full-Text 1 - Computing the efficiency interval of decision making units (DMUs) having interval inputs and outputs with the presence of negative data M. Rostamy-Malkhalifeh F. seyed Esmaeili Open Access Article Abstract Page Full-Text 2 - Financial performance measurement of the top 50 companies on the stock exchange using non-radial models of data envelopment analysis Saeid Rezaeilava Mirfeyz Fallah Masoud Sanei Shokofeh Banihashemi