Phantu, S., C. Chananet, Y. Areepong, and S. Sukparungsee. “Explicit Formulas of Average Run Lengths of Moving Average-Range Control Chart”. Thailand Statistician, vol. 22, no. 3, June 2024, pp. 618-33, https://ph02.tci-thaijo.org/index.php/thaistat/article/view/254772.