Gaurav Kumar and  Rakesh Kumar Bajaj,  Implementation of Intuitionistic Fuzzy Approach in Maximizing Net Present Value.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2014, vol. 91(7). 1069 - 1073
    [viewed 30 September 2020]. Available from: https://publications.waset.org/pdf/9999259.