J.TRYPHENA; G.RAMANI. Automatic billing trolley in mega mall . International journal of intellectual advancements and research in engineering computations, [S. l.], v. 6, n. 2, p. 2217–2224, 2018. Disponível em: https://ijiarec.com/ijiarec/article/view/816. Acesso em: 6 may. 2024.