Othman Belgassim and  Krzysztof Jemielniak,  Tool Failure Detection Based on Statistical Analysis of Metal Cutting Acoustic Emission Signals.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2011, vol. 50(2). 378 - 385
    [viewed 18 May 2021]. Available from: https://publications.waset.org/pdf/2812.