Na, Risu, Kaifa Jia, Shujing Miao, Weiguo Zhang, and Quan Zhang. “Analysis of the Dynamic Characteristics of a Gear-Rotor-Bearing System With External Excitation”. Strojniški vestnik - Journal of Mechanical Engineering 69, no. 1-2 (February 17, 2023): 17–31. Accessed March 25, 2023. https://ojs30.sv-jme.eu/index.php/sv-jme/article/view/427.