Irshad, M. R., and N. K. Sajeevkumar. “Estimating the Mean of the Logistic Distribution With Known Coefficient of Variation by U-Statistics”. Thailand Statistician, vol. 14, no. 2, July 2016, pp. 117-28, https://ph02.tci-thaijo.org/index.php/thaistat/article/view/63610.