BALAJI N; MOHANRAJ K; MOHAMED ASLAM R; KISHORE T; DURGADEVI K. Self Operating Railway Gate With Safety Alarm. Elementary Education Online, [S. l.], v. 19, n. 2, p. 2152–2157, 2023. Disponível em: https://ilkogretim-online.org/index.php/pub/article/view/6855. Acesso em: 3 jun. 2024.