W. Cruz, N. Arzola, and O. Araque, “Modeling and experimental validation of the vibration in an unbalance multi-stage rotor”, J. Mech. Eng. Sci., vol. 13, no. 3, pp. 5703–5716, Sep. 2019, doi: 10.15282/jmes.13.3.2019.30.0456.