Jannah, M., Annisa, R., Saputro, A. H., & Lestari, T. (2024). Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks. Spektra: Jurnal Fisika Dan Aplikasinya, 9(3), 179–188. https://doi.org/10.21009/SPEKTRA.093.05