Design And Implementation of Smart Vending Machine. International Journal of Multidisciplinary Engineering In Current Research, [S. l.], v. 11, n. 7, p. 59–64, 2026. DOI: 10.63665/x19ay120. Disponível em: https://ijmec.com/index.php/multidisciplinary/article/view/1107. Acesso em: 22 jul. 2026.