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• Raji_allah.Abdelali Dynamics of a Delayed Epidemic Model with Beddington-DeAngelis ‎Incidence Rate and a Constant Infectious Period [ Vol.9, Issue 2 - Spring Year 2019]
• Rashidinia.Jalil The Numerical Solution of Klein-Gorden Equation by Using Nonstandard Finite Difference [ Vol.9, Issue 3 - Summer Year 2019]
• Razavyan.Shabnam Efficiency of Centralized Structures in Data Envelopment Analysis Ratio Models [ Vol.9, Issue 3 - Summer Year 2019]