JAVALI, Sushmitha K. S.; BHAVANISHANKAR, K. Smart Billing Trolley for Shopping. International Journal of Research in Engineering, Science and Management, [S. l.], v. 3, n. 8, p. 337–342, 2020. Disponível em: https://journal.ijresm.com/index.php/ijresm/article/view/193.. Acesso em: 3 may. 2024.