SUJONO, S.; RUSLI M, M. Implementasi Sistem Peringatan Banjir Dini dengan Sensor HC-SR04 Berbasis ESP32 Internet of Things. Computer Journal, [S. l.], v. 4, n. 1, p. 41–51, 2026. DOI: 10.58477/cj.v4i1.385. Disponível em: http://journal.ypmma.org/index.php/cj/article/view/385. Acesso em: 28 jun. 2026.