Liong, A. R. T. “The Methods for Efficient Transverse Vibration of Structural Dynamics: A Historical Point of View”. Cylinder : Jurnal Ilmiah Teknik Mesin, vol. 1, no. 1, Feb. 2023, pp. 1-7, https://ejournal.atmajaya.ac.id/index.php/cylinder/article/view/4275.