Albatineh, A. N., F. George, B. M. G. Kibria, and M. L. Wilcox. “Confidence interval estimation of the signal-to-noise ratio using ranked set sampling: a simulation study”. Thailand Statistician, vol. 12, no. 1, May 2015, pp. 55-69, https://ph02.tci-thaijo.org/index.php/thaistat/article/view/34205.