Gustono, S.T. et al. 2020. THE CHANGE OF ROCK CONDITION OBSERVED BY H/V SPECTRAL AND ELLIPTICITY CURVE INVERSION ANALYSIS (CASE STUDY: PALU EARTHQUAKE SEPTEMBER 28, 2018). Spektra: Jurnal Fisika dan Aplikasinya. 5, 3 (Dec. 2020), 201–212. DOI:https://doi.org/10.21009/SPEKTRA.053.04.