List of Articles Uncontrollable Factors Open Access Article Abstract Page Full-Text 1 - Effect of uncontrollable factors on constant returns-to-scale production technologies Reza Shahverdi Azam Ahmadzadeh Open Access Article Abstract Page Full-Text 2 - Provide a model for calculating the efficiency of companies with the help of network data envelopment analysis with undesirable factors ahmad royaei farhad hosseinzadehlotfi