List of Articles فضای غیررقابتی Open Access Article Abstract Page Full-Text 1 - Introducing a new inefficiency source due to inappropriate price selection in a Non-Competitive Environment in Data Envelopment Analysis (a case study in the Imam Khomeini Oil Refinery Company of Shazand in Iran) Elham Rezaei hezaveh Reza Fallahnejad Masoud Sanei Mohammad Izadikhah