Areepong Y, Sukparungsee S. An Integral Equation Approach to EWMA Chart for Detecting a Change in Lognormal Distribution. Thail. Stat. [internet]. 2015 May 28 [cited 2026 Sep. 28];8(1):47-61. available from: https://ph02.tci-thaijo.org/index.php/thaistat/article/view/34297