فهرس المقالات Omid Tehranian المقاله 1 - Effects of Nonstationary and Uncertain Demand on an Inventory System Under Belief Structure Condition 10.30495/ijim.2022.42963.1300 O. Tehranian A. Mirzazadeh B. Naderi International Journal of Industrial Mathematics , العدد 4 , السنة 15 , بهار 2023