Thangjai, Warisa, Sa-Aat Niwitpong, and Suparat Niwitpong. “Simultaneous Confidence Intervals for All Differences of Coefficients of Variation of Normal Distributions With an Application to PM2.5 Dispersion”. Thailand Statistician 20, no. 1 (December 30, 2021): 207–226. Accessed April 19, 2024. https://ph02.tci-thaijo.org/index.php/thaistat/article/view/245860.