List of Articles PTM Open Access Article Abstract Page Full-Text 1 - بررسی وجود تبعیض قیمت در بازار زعفران صادراتی ایران الهه محمودی مجید محمودی Open Access Article Abstract Page Full-Text 2 - Development of Fuzzy Random Optimization Model Mean-Developing a fuzzy random portfolio optimization model Considering Investor's Risk Attitude Hosein Didehkhani Ebrahim Abbasi Amir Shiri Ghehi Mohammad Moshari