فهرس المقالات Sarkout Abdi المقاله 1 - Legendre Wavelet Method for a Class of Fourth-Order Boundary Value Problems 20.1001.1.25885723.2020.12.2.11.9 Sarkout Abdi Aram Azizi Mahmoud Shafiee Jamshid Saeidian Iranian Journal of Optimization , العدد 5 , السنة 12 , بهار 2020