Pramote Charongrattanasakul and Adisak Pongpullponsak (2009) “Minimizing The Cost of an Integrated Model by EWMA Control Chart”, Agriculture and Natural Resources. Bangkok, Thailand, 43(5), pp. 385–391. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/244847 (accessed: 16 December 2025).