Ningrum, R. W., Fauzi, H., Suryanto, W., Mei, E. T. W., & Amelia, R. N. (2020). Microtremor Data to Strengthen the Students Mastery of Materials in the Implementation of Integrated Physics Learning. Jurnal Penelitian Fisika Dan Aplikasinya (JPFA), 10(1), 81–89. https://doi.org/10.26740/jpfa.v10n1.p81-89