C. Ardil,  Trainer Aircraft Selection Using Preference Analysis for Reference Ideal Solution (PARIS).   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2020, vol. 161(5). 193 - 204
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10012214.