et.al, Sazly Anuar. “Safety Features and Inventory Management for Vending Machine Using IoT”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 3 (April 11, 2021): 2242–2252. Accessed August 14, 2025. https://www.turcomat.org/index.php/turkbilmat/article/view/1174.