WASET
    Suparat Niwitpong,  Confidence Intervals for the Difference of Two Normal Population Variances.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2011, vol. 56(8). 1371 - 1374
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/15664.