Suppatoomsin, C., Takkratok, E., Vilailak, K. and Meehom, S. (2022) “Automatic Vending Machine Using Microcontroller”, Journal of Vongchavalitkul university, 35(1), pp. 103–117. Available at: https://ph01.tci-thaijo.org/index.php/vujournal/article/view/248232 (Accessed: 17 April 2024).