Billy Montolalu, Hamzah Ulinuha Mustakim and Nilla Rachmaningrum (2021) “Notifikasi Real-time Pada Sistem Nurse Call Nirkabel Berbasis Zigbee Menggunakan Protokol WebSocket”, Systemic: Information System and Informatics Journal, 7(1), pp. 49–54. doi: 10.29080/systemic.v7i1.1096.