Yusuf M. Rancang Bangun Tombol Darurat Bagi Lansia dan Penderita Cardiovascular Berbasis ESP8266 dan Raspberry Pi. j_ict [Internet]. 2020Dec.17 [cited 2024Apr.18];2(2):1-7. Available from: https://ejournal.akademitelkom.ac.id/j_ict/index.php/j_ict/article/view/53