Jannah, Miftahul, Risa Annisa, Adhi Harmoko Saputro, and Titik Lestari. “Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks”. Spektra: Jurnal Fisika dan Aplikasinya 9, no. 3 (December 16, 2024): 179–188. Accessed October 2, 2026. https://journal.unj.ac.id/unj/index.php/spektra/article/view/49829.