Sinaga, Goldberd Harmuda Duva, and Juliper Nainggolan. “Analysis of Sumatran Earthquake Coulomb Stress Changes in Geothermal Potential in Rianite, Samosir Regency ”. Jurnal Pendidikan Fisika Dan Teknologi, vol. 9, no. 2, Dec. 2023, pp. 224-33, doi:10.29303/jpft.v9i2.5900.