Chuan Li and  Ming Liang,  Oil Debris Signal Detection Based on Integral Transform and Empirical Mode Decomposition.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2011, vol. 52(4). 749 - 753
    [viewed 05 April 2020]. Available from: https://publications.waset.org/pdf/13688.