فهرس المقالات M.M Najafizadeh المقاله 1 - Free Vibration Analysis of Elastically Connected Beams with Step 20.1001.1.20083505.2023.15.3.1.2 https://doi.org/10.60664/jsm.2023.2051742 H Nayebi Mohammad Mahdi Najafizadeh Journal of Solid Mechanics , العدد 4 , السنة 15 , تابستان 2023