List of articles (by subject) Operations Research Open Access Article Abstract Page Full-Text 1 - On inverse data envelopment analysis under weight restrictions Mehrab Esmaeili Open Access Article Abstract Page Full-Text 2 - The Relationship Between Company Strategies and Effective Factors According to The Degree of Cost Stickiness Zahra Hashemipour Nasri Mojgan Safa Fardin Mansouri Reza Gholami Jamkarani Open Access Article Abstract Page Full-Text 3 - Using Constrained Optimization to Find Real Roots of Polynomial(RRP) Hossein Jafari Mohammad Ehsanifar