Winata, E. N., M. Syamsu Rosid, and F. Febriani. “Multi-Station ULF Geomagnetic Analysis for Enhanced Earthquake Precursor Identification”. Journal of Engineering, Technology, and Applied Science (JETAS), Vol. 7, no. 3, Dec. 2025, pp. 158-75, doi:10.36079/lamintang.jetas-0703.931.