Cruz, W., N. Arzola, and O. Araque. “Modeling and Experimental Validation of the Vibration in an Unbalance Multi-Stage Rotor”. Journal of Mechanical Engineering and Sciences 13, no. 3 (September 27, 2019): 5703 - 5716. Accessed September 30, 2020. https://journal.ump.edu.my/jmes/article/view/971.