Juan David Arango and  Alejandro Restrepo-Martinez,  Rolling Element Bearing Diagnosis by Improved Envelope Spectrum: Optimal Frequency Band Selection.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2021, vol. 176(8). 322 - 330
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10012159.