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• Sanei.M. Evaluating the Efficiency of Hospital Emergencies during COVID-19 Pandemic Crisis in the Presence of Undesirable Inputs in DEA [ Vol.2, Issue 3 - Summer Year 2021]
• Santos Arteaga.Francisco Javier A New Approach for Solving Intuitionistic Fuzzy Data Envelopment Analysis Problems [ Vol.2, Issue 2 - Spring Year 2021]
• Shahkooeei.Maliheh Attractiveness and Progress in Integer-Valued Data Envelopment Analysis [ Vol.2, Issue 4 - Autumn Year 2021]
• Shehu Shagari.Mohammed On Fixed Points of Soft Set-Valued Maps [ Vol.2, Issue 3 - Summer Year 2021]
• Sheykhan.Abbas Integrating Developed Evolutionary Algorithm and Taguchi Method for Solving Fuzzy Facility’s Layout Problem [ Vol.2, Issue 3 - Summer Year 2021]
• Shirazi.Fatemeh Optimistic and Pessimistic Fuzzy Data Envelopment Analysis: Empirical Evidence from Tehran Stock Market [ Vol.2, Issue 2 - Spring Year 2021]
• Singh.Akanksha A New Pythagorean Fuzzy Analytic Hierarchy Process Based on Interval-Valued Pythagorean Fuzzy Numbers [ Vol.2, Issue 4 - Autumn Year 2021]
• Sirajo.Yahaya On Fixed Points of Soft Set-Valued Maps [ Vol.2, Issue 3 - Summer Year 2021]
• Sorourkhah.Ali Considering the Criteria interdependency in the Matrix Approach to Robustness Analysis with Applying Fuzzy ANP [ Vol.2, Issue 2 - Spring Year 2021]