List of Articles modeling Open Access Article Abstract Page Full-Text 1 - A Structural Model of Production Financing Barriers in Small and Medium-Sized Enterprises mansour nouri Mehrdad Hosseini Shakib Abbas Khamseh Open Access Article Abstract Page Full-Text 2 - Modeling and Simulation of the Bitcoin Price by the System Dynamics Method Roohollah Sharafian Ardekani Amir Daneshvar Mehdi Madanchi Zaj Fereydon Rahnamaroodposhti Open Access Article Abstract Page Full-Text 3 - Sustainability of the Supply Chain for Perishable Products from Economic, Environmental, and Social Perspectives Using a Hybrid Simulation Approach Mehdi Sohanian reza Ehtesham Rasi reza radfar