K. GOPINATH; B. SREEDEVI. Smart Trolleys System For Smart Shopping. Elementary Education Online, [S. l.], v. 19, n. 2, p. 1991–2000, 2023. Disponível em: https://ilkogretim-online.org/index.php/pub/article/view/6800. Acesso em: 24 aug. 2024.