Jinming Ma and  Tianbing Xia and  Janusz R. Getta,  The Application of Fuzzy Set Theory to Mobile Internet Advertisement Fraud Detection.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2021, vol. 176(8). 452 - 457
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10012151.