Jaroenkhun, K., W. Khnagphukhieo, and T. Theparod. “Cost-Effectiveness of Optimal Control Strategies to Control the Number of E-Cigarette Users among Teenagers in Thailand Using Mathematical Model”. Burapha Science Journal, vol. 27, no. 3 September-December, Mar. 2026, pp. 1977-93, https://li05.tci-thaijo.org/index.php/buuscij/article/view/1238.