فهرس المقالات characteristic equation حرية الوصول المقاله صفحة الملخص نص كامل 1 - Exact Closed Form Characteristic Equations for Transverse Vibration of Timoshenko Beams Shahriar Hosseini-Hashemi K Hosseini-Hashemi Reza Nazemnezhad https://doi.org/10.60664/jsm.2023.2101757 حرية الوصول المقاله صفحة الملخص نص كامل 2 - Dynamics of a Delayed Epidemic Model with Beddington-DeAngelis Incidence Rate and a Constant Infectious Period Abdelali Raji_allah Hamad Talibi Alaoui
