List of Articles Abdollah Hadi-Vencheh Article 1 - حل مدل ریاضی جدید چند هدفه فازی زنجیره تأمین بر اساس اندازه لزوم فازی. Alireza Mansori sulaiman Iranzadeh Abdollah Hadi Journal of New Researches in Mathematics , Issue 18 , Year , Spring_Summer 2019 Article 2 - Effective Approach for Solving the Supplier Selection Problem Under Multiple Criteria 20.1001.1.25382217.2020.14.1.11.3 Abdollah Hadi-Vencheh Theory of Approximation and Applications , Issue 1 , Year , Winter 2020 Article 3 - Developing a DEA model to measure the performance of supply chains 20.1001.1.25382217.2021.15.1.11.0 Abdollah Hadi-Vencheh Theory of Approximation and Applications , Issue 1 , Year , Winter 2021 Article 4 - Increasing the Discrimination Power in a Voting System 20.1001.1.25382217.2020.14.2.11.5 Abdollah Hadi-Vencheh Theory of Approximation and Applications , Issue 1 , Year , Spring 2020 Article 5 - Role of Market Demand and Added Value in Optimizing the Iron Products 20.1001.1.25382217.2021.15.2.11.2 Abdollah Hadi-Vencheh Theory of Approximation and Applications , Issue 1 , Year , Spring 2021 Article 6 - A new non-parametric approach for suppliers selection A. Hadi-Vencheh M. Niazi-Motlagh Theory of Approximation and Applications , Issue 1 , Year , Winter 2016