@article{machado_cavalca_2016,  title={Experimental validation of a bearing wear model using the directional response of the rotor-bearing system},  volume={88},  ISSN={0001-3765},  url={https://doi.org/10.1590/0001-3765201620150414},  DOI={10.1590/0001-3765201620150414},  number={4},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Machado, Tiago Henrique and Cavalca, Katia L.},  year={2016},  month={Oct},  pages={2401–2416} }