Pham, L., and N. Vu. “Influence of Temperature and Porosities on Free Vibration of a Three-Phase Bidirectional Functionally Graded Sandwich Beam”. VNUHCM Journal of Engineering and Technology, Vol. 5, no. SI2, Dec. 2023, pp. 65-76, doi:https://doi.org/10.32508/stdjet.v6iSI2.1095.