WASET
    C. Ardil,  Determinate Fuzzy Set Ranking Analysis for Combat Aircraft Selection with Multiple Criteria Group Decision Making.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2023, vol. 195(3). 272 - 279
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/10013038.