Jannah, Miftahul, Risa Annisa, Adhi Harmoko Saputro, and Titik Lestari. 2024. “Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks”. Spektra: Jurnal Fisika Dan Aplikasinya 9 (3):179-88. https://doi.org/10.21009/SPEKTRA.093.05.