Lien, P. T. B., and N. T. Khiem. “Resonant and Antiresonant Frequencies of Multiple Cracked Bar”. Vietnam Journal of Mechanics 41, no. 2 (June 25, 2019): 157–170. Accessed April 20, 2024. https://vjs.ac.vn/index.php/vjmech/article/view/13092.