فهرس المقالات Mohammad Hajhosseini المقاله 1 - Study on Vibration Band Gap Characteristics of a Branched Shape Periodic Structure Using the GDQR 20.1001.1.20083505.2021.13.3.2.9 10.22034/jsm.2020.1878636.1496 M Hajhosseini A Abshahi Journal of Solid Mechanics , العدد 4 , السنة 13 , تابستان 2021