Niwitpong, Sa-aat. “Confidence Intervals for the Variance and the Ratio of Variances of Log-Normal Distribution With Known Coefficients of Variation”. IJRDO -JOURNAL OF MATHEMATICS 2, no. 11 (November 30, 2016): 01-08. Accessed November 23, 2024. http://13.234.104.160/index.php/m/article/view/1618.