Harahap, N. S., I. . Purnama, and R. Rohani. “Earthquake Detection IoT Prototype With Early Warning System Based on Vibration Sensor”. Sinkron : Jurnal Dan Penelitian Teknik Informatika, vol. 9, no. 2, June 2025, pp. 1008-14, doi:10.33395/sinkron.v9i2.14807.