Yaghoobi, Majid, Mohsen Sedaghatjo, Reyhaneh Alizadeh, and Mohammad Karkon. 2021. “Evaluating the Effect of Asymmetric Cross-Section in Free Vibration and Bending Analysis Results of FG Sandwich Beam by Proposing Simple Efficient Element”. Periodica Polytechnica Civil Engineering 65 (2):638-48. https://doi.org/10.3311/PPci.17447.