Lien, T. V., Khiem, N. T., & Duc, N. T. (2016). FREE VIBRATION ANALYSIS OF FUNCTIONALLY GRADED TIMOSHENKO BEAM USING DYNAMIC STIFFNESS METHOD. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, 10(5), 19–28. Retrieved from https://stce.vjst.net/index.php/en/article/view/290