Sa-aat Niwitpong,  Coverage Probability of Confidence Intervals for the Normal Mean and Variance with Restricted Parameter Space.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2011, vol. 56(8). 1365 - 1370
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9082.