R. Wahyu Ningrum, H. Fauzi, W. Suryanto, and E. T. Wulan Mei, “Mapping Seismic Vulnerability Index (Kg) For Earthquake Swarm Activity In Western Halmahera, Indonesia”, Proc. Int. Conf. Multidiscip. Eng. (ICOMDEN), vol. 1, p. 00027, Dec. 2018.