Hnin, Mya Thet, and Thein Min Htike. “Investigation of Natural Frequency and Critical Speed for Jeffcott Rotor System”. Journal of Research and Applications in Mechanical Engineering 9, no. 1 (December 22, 2020): JRAME–21. Accessed April 20, 2024. https://ph01.tci-thaijo.org/index.php/jrame/article/view/240901.