WASET
    S. P. Sharma and  Monica Rani,  Reliability Analysis of Press Unit using Vague Set.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2012, vol. 66(6). 674 - 680
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/4121.