KAVITHA, D; ., . Modern shopping cart with automatic billing system using load sensor. International Journal of Engineering and Technology, [S. l.], v. 7, n. 2.33, p. 607–610, 2018. DOI: 10.14419/ijet.v7i2.33.14846. Disponível em: https://mail.sciencepubco.com/index.php/IJET/article/view/14846.. Acesso em: 6 jun. 2025.