Syafriani, F. D. . Raharjo, S. . Ahadi, and M. . Ramdhan, “Study of Seismicity Based on the Results of Hypocenter Relocation Using Double Difference (HypoDD) Method in West Sumatera and Its Surrounding”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 9, no. 7, pp. 5150–5156, Jul. 2023.