فهرس المقالات Thick sphere حرية الوصول المقاله صفحة الملخص نص كامل 1 - Effect of Exponentially-Varying Properties on Displacements and Stresses in Pressurized Functionally Graded Thick Spherical Shells with Using Iterative Technique M Zamani Nejad A Rastgoo A Hadi حرية الوصول المقاله صفحة الملخص نص كامل 2 - Effect of Material Gradient on Stresses of Thick FGM Spherical Pressure Vessels with Exponentially-Varying Properties Mohammad Nejad Mahboobeh Gharibi