List of Articles Solution technique Open Access Article Abstract Page Full-Text 1 - Preparation and Mechanical Properties of Compositionally Graded Polyethylene/Clay Nanocomposites M.H Yas M Karami Khorramabadi Open Access Article Abstract Page Full-Text 2 - The Evaluation of Spatial Distribution of Sustainable Development Principles among the Townships of Ilam Province Using VIKOR-SAW Technique تیمور Amar مهدی Khodadad ابراهیم Moammari