RATNASRI, N. .; SHARMILAN, T. . Vending Machine Technologies: A Review Article. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 58, n. 2, p. 160–166, 2021. Disponível em: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/12579. Acesso em: 4 may. 2024.