WASET
    G. S. Mahapatra and  T. K. Roy,  Reliability Evaluation using Triangular Intuitionistic Fuzzy Numbers Arithmetic Operations.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2009, vol. 26(2). 350 - 357
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10400.