R. Irvan Moch. Taufiq, C. Cepy Slamet, R. Andrian, H. Aulawi, and M. Ali Ramdhani, “Early Warning System in Mobile-Based Impacted Areas”, IJET, vol. 7, no. 3.4, pp. 118–121, Jun. 2018, doi: 10.14419/ijet.v7i3.4.16758.