SIVA RAJU; DR HUDA BIN A MAJID. Sales Monitoring System for Vending Machine Using IoT. Progress in Engineering Application and Technology, [S. l.], v. 4, n. 2, p. 415–424, 2023. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/13202.. Acesso em: 20 may. 2024.